Update ios.md (#17724)
Update ios.md (#17724)

brew install commonly fails on modern versions of OSX, where the symlink needs to be manually added. I added instructions to chown /usr/local/*, which will allow for this.
renyi533/tensorflow,kobejean/tensorflow,asimshankar/tensorflow,tensorflow/tensorflow-pywrap_saved_model,jendap/tensorflow,ZhangXinNan/tensorflow,gunan/tensorflow,snnn/tensorflow,hehongliang/tensorflow,karllessard/tensorflow,lukeiwanski/tensorflow,dendisuhubdy/tensorflow,karllessard/tensorflow,manipopopo/tensorflow,AnishShah/tensorflow,yanchen036/tensorflow,eaplatanios/tensorflow,jendap/tensorflow,petewarden/tensorflow,gautam1858/tensorflow,renyi533/tensorflow,gojira/tensorflow,eaplatanios/tensorflow,manipopopo/tensorflow,eaplatanios/tensorflow,AnishShah/tensorflow,arborh/tensorflow,alsrgv/tensorflow,paolodedios/tensorflow,seanli9jan/tensorflow,aam-at/tensorflow,nburn42/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow,gunan/tensorflow,kevin-coder/tensorflow-fork,asimshankar/tensorflow,ageron/tensorflow,seanli9jan/tensorflow,jendap/tensorflow,Intel-Corporation/tensorflow,caisq/tensorflow,hfp/tensorflow-xsmm,jalexvig/tensorflow,freedomtan/tensorflow,yanchen036/tensorflow,ppwwyyxx/tensorflow,Xeralux/tensorflow,dancingdan/tensorflow,ageron/tensorflow,jendap/tensorflow,davidzchen/tensorflow,seanli9jan/tensorflow,dendisuhubdy/tensorflow,Intel-Corporation/tensorflow,karllessard/tensorflow,dongjoon-hyun/tensorflow,alsrgv/tensorflow,gojira/tensorflow,arborh/tensorflow,gojira/tensorflow,dancingdan/tensorflow,eaplatanios/tensorflow,asimshankar/tensorflow,DavidNorman/tensorflow,ghchinoy/tensorflow,karllessard/tensorflow,dendisuhubdy/tensorflow,ageron/tensorflow,jhseu/tensorflow,dongjoon-hyun/tensorflow,Xeralux/tensorflow,aam-at/tensorflow,adit-chandra/tensorflow,petewarden/tensorflow,hfp/tensorflow-xsmm,seanli9jan/tensorflow,jbedorf/tensorflow,freedomtan/tensorflow,ghchinoy/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,chemelnucfin/tensorflow,Intel-tensorflow/tensorflow,seanli9jan/tensorflow,xodus7/tensorflow,ppwwyyxx/tensorflow,adit-chandra/tensorflow,ghchinoy/tensorflow,kobejean/tensorflow,benoitsteiner/tensorflow-xsmm,jart/tensorflow,tensorflow/tensorflow-pywrap_saved_model,kevin-coder/tensorflow-fork,lukeiwanski/tensorflow,alshedivat/tensorflow,aam-at/tensorflow,ZhangXinNan/tensorflow,Xeralux/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,chemelnucfin/tensorflow,theflofly/tensorflow,dongjoon-hyun/tensorflow,theflofly/tensorflow,petewarden/tensorflow,brchiu/tensorflow,jendap/tensorflow,hfp/tensorflow-xsmm,alsrgv/tensorflow,gautam1858/tensorflow,freedomtan/tensorflow,kevin-coder/tensorflow-fork,gunan/tensorflow,aam-at/tensorflow,alshedivat/tensorflow,davidzchen/tensorflow,drpngx/tensorflow,gunan/tensorflow,tensorflow/tensorflow,seanli9jan/tensorflow,jart/tensorflow,ghchinoy/tensorflow,apark263/tensorflow,asimshankar/tensorflow,jart/tensorflow,caisq/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,apark263/tensorflow,dancingdan/tensorflow,Intel-tensorflow/tensorflow,meteorcloudy/tensorflow,nburn42/tensorflow,chemelnucfin/tensorflow,xzturn/tensorflow,lukeiwanski/tensorflow,meteorcloudy/tensorflow,dongjoon-hyun/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow,AnishShah/tensorflow,jalexvig/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,jalexvig/tensorflow,yanchen036/tensorflow,ghchinoy/tensorflow,allenlavoie/tensorflow,eaplatanios/tensorflow,ageron/tensorflow,theflofly/tensorflow,meteorcloudy/tensorflow,benoitsteiner/tensorflow-xsmm,brchiu/tensorflow,hehongliang/tensorflow,kobejean/tensorflow,ppwwyyxx/tensorflow,theflofly/tensorflow,ageron/tensorflow,freedomtan/tensorflow,arborh/tensorflow,renyi533/tensorflow,girving/tensorflow,benoitsteiner/tensorflow-xsmm,nburn42/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_saved_model,jhseu/tensorflow,Intel-Corporation/tensorflow,drpngx/tensorflow,dancingdan/tensorflow,adit-chandra/tensorflow,DavidNorman/tensorflow,DavidNorman/tensorflow,aldian/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aldian/tensorflow,caisq/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,meteorcloudy/tensorflow,girving/tensorflow,freedomtan/tensorflow,aam-at/tensorflow,kobejean/tensorflow,asimshankar/tensorflow,ageron/tensorflow,alshedivat/tensorflow,drpngx/tensorflow,caisq/tensorflow,yongtang/tensorflow,xzturn/tensorflow,karllessard/tensorflow,sarvex/tensorflow,tensorflow/tensorflow,freedomtan/tensorflow,renyi533/tensorflow,Xeralux/tensorflow,aselle/tensorflow,lukeiwanski/tensorflow,renyi533/tensorflow,yongtang/tensorflow,asimshankar/tensorflow,theflofly/tensorflow,DavidNorman/tensorflow,annarev/tensorflow,DavidNorman/tensorflow,alsrgv/tensorflow,alsrgv/tensorflow,ZhangXinNan/tensorflow,nburn42/tensorflow,petewarden/tensorflow,caisq/tensorflow,jhseu/tensorflow,theflofly/tensorflow,brchiu/tensorflow,jbedorf/tensorflow,frreiss/tensorflow-fred,jalexvig/tensorflow,Intel-Corporation/tensorflow,aam-at/tensorflow,ghchinoy/tensorflow,adit-chandra/tensorflow,brchiu/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aselle/tensorflow,Intel-tensorflow/tensorflow,nburn42/tensorflow,hehongliang/tensorflow,allenlavoie/tensorflow,petewarden/tensorflow,drpngx/tensorflow,sarvex/tensorflow,dendisuhubdy/tensorflow,tensorflow/tensorflow-pywrap_saved_model,sarvex/tensorflow,xzturn/tensorflow,theflofly/tensorflow,jart/tensorflow,apark263/tensorflow,girving/tensorflow,jhseu/tensorflow,ZhangXinNan/tensorflow,adit-chandra/tensorflow,renyi533/tensorflow,apark263/tensorflow,paolodedios/tensorflow,brchiu/tensorflow,Bismarrck/tensorflow,aselle/tensorflow,kevin-coder/tensorflow-fork,gojira/tensorflow,hfp/tensorflow-xsmm,meteorcloudy/tensorflow,adit-chandra/tensorflow,jendap/tensorflow,aldian/tensorflow,hfp/tensorflow-xsmm,nburn42/tensorflow,yongtang/tensorflow,allenlavoie/tensorflow,seanli9jan/tensorflow,karllessard/tensorflow,drpngx/tensorflow,tensorflow/tensorflow,xodus7/tensorflow,girving/tensorflow,chemelnucfin/tensorflow,ghchinoy/tensorflow,yongtang/tensorflow,freedomtan/tensorflow,yanchen036/tensorflow,gojira/tensorflow,caisq/tensorflow,ppwwyyxx/tensorflow,alshedivat/tensorflow,paolodedios/tensorflow,freedomtan/tensorflow,dendisuhubdy/tensorflow,dendisuhubdy/tensorflow,jhseu/tensorflow,allenlavoie/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,jalexvig/tensorflow,jalexvig/tensorflow,benoitsteiner/tensorflow-xsmm,hfp/tensorflow-xsmm,paolodedios/tensorflow,jhseu/tensorflow,eaplatanios/tensorflow,brchiu/tensorflow,frreiss/tensorflow-fred,jendap/tensorflow,jendap/tensorflow,hehongliang/tensorflow,Intel-tensorflow/tensorflow,dancingdan/tensorflow,nburn42/tensorflow,theflofly/tensorflow,xodus7/tensorflow,tensorflow/tensorflow,ppwwyyxx/tensorflow,DavidNorman/tensorflow,xzturn/tensorflow,tensorflow/tensorflow,apark263/tensorflow,theflofly/tensorflow,annarev/tensorflow,dancingdan/tensorflow,yanchen036/tensorflow,ZhangXinNan/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,manipopopo/tensorflow,ageron/tensorflow,aselle/tensorflow,alshedivat/tensorflow,chemelnucfin/tensorflow,alsrgv/tensorflow,renyi533/tensorflow,cxxgtxy/tensorflow,Intel-Corporation/tensorflow,alsrgv/tensorflow,gojira/tensorflow,jalexvig/tensorflow,AnishShah/tensorflow,arborh/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,chemelnucfin/tensorflow,manipopopo/tensorflow,AnishShah/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,manipopopo/tensorflow,frreiss/tensorflow-fred,ghchinoy/tensorflow,alsrgv/tensorflow,jendap/tensorflow,DavidNorman/tensorflow,frreiss/tensorflow-fred,arborh/tensorflow,meteorcloudy/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,apark263/tensorflow,eaplatanios/tensorflow,xzturn/tensorflow,kobejean/tensorflow,allenlavoie/tensorflow,ageron/tensorflow,manipopopo/tensorflow,jalexvig/tensorflow,eaplatanios/tensorflow,kevin-coder/tensorflow-fork,jhseu/tensorflow,yongtang/tensorflow,karllessard/tensorflow,renyi533/tensorflow,gunan/tensorflow,aam-at/tensorflow,ppwwyyxx/tensorflow,kevin-coder/tensorflow-fork,gunan/tensorflow,xzturn/tensorflow,Bismarrck/tensorflow,snnn/tensorflow,drpngx/tensorflow,ageron/tensorflow,Intel-tensorflow/tensorflow,asimshankar/tensorflow,dongjoon-hyun/tensorflow,tensorflow/tensorflow,apark263/tensorflow,jart/tensorflow,davidzchen/tensorflow,hfp/tensorflow-xsmm,aselle/tensorflow,nburn42/tensorflow,paolodedios/tensorflow,aldian/tensorflow,lukeiwanski/tensorflow,ZhangXinNan/tensorflow,theflofly/tensorflow,petewarden/tensorflow,girving/tensorflow,Xeralux/tensorflow,karllessard/tensorflow,adit-chandra/tensorflow,paolodedios/tensorflow,chemelnucfin/tensorflow,girving/tensorflow,ageron/tensorflow,Xeralux/tensorflow,adit-chandra/tensorflow,annarev/tensorflow,apark263/tensorflow,cxxgtxy/tensorflow,gojira/tensorflow,kevin-coder/tensorflow-fork,petewarden/tensorflow,girving/tensorflow,benoitsteiner/tensorflow-xsmm,chemelnucfin/tensorflow,chemelnucfin/tensorflow,tensorflow/tensorflow-pywrap_saved_model,asimshankar/tensorflow,cxxgtxy/tensorflow,renyi533/tensorflow,davidzchen/tensorflow,Intel-tensorflow/tensorflow,jbedorf/tensorflow,seanli9jan/tensorflow,nburn42/tensorflow,snnn/tensorflow,xzturn/tensorflow,chemelnucfin/tensorflow,jbedorf/tensorflow,tensorflow/tensorflow,Bismarrck/tensorflow,gautam1858/tensorflow,jendap/tensorflow,Intel-tensorflow/tensorflow,girving/tensorflow,snnn/tensorflow,ghchinoy/tensorflow,cxxgtxy/tensorflow,meteorcloudy/tensorflow,ZhangXinNan/tensorflow,chemelnucfin/tensorflow,kobejean/tensorflow,aldian/tensorflow,petewarden/tensorflow,yongtang/tensorflow,xodus7/tensorflow,drpngx/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,Bismarrck/tensorflow,annarev/tensorflow,frreiss/tensorflow-fred,xodus7/tensorflow,meteorcloudy/tensorflow,lukeiwanski/tensorflow,aldian/tensorflow,Xeralux/tensorflow,yongtang/tensorflow,gunan/tensorflow,gojira/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,DavidNorman/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,kobejean/tensorflow,gautam1858/tensorflow,manipopopo/tensorflow,asimshankar/tensorflow,hehongliang/tensorflow,yanchen036/tensorflow,petewarden/tensorflow,dendisuhubdy/tensorflow,AnishShah/tensorflow,aldian/tensorflow,kobejean/tensorflow,tensorflow/tensorflow,kevin-coder/tensorflow-fork,brchiu/tensorflow,gautam1858/tensorflow,Bismarrck/tensorflow,girving/tensorflow,allenlavoie/tensorflow,yongtang/tensorflow,dancingdan/tensorflow,benoitsteiner/tensorflow-xsmm,Xeralux/tensorflow,jhseu/tensorflow,annarev/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-tensorflow/tensorflow,dongjoon-hyun/tensorflow,jart/tensorflow,sarvex/tensorflow,seanli9jan/tensorflow,Intel-Corporation/tensorflow,aselle/tensorflow,caisq/tensorflow,Bismarrck/tensorflow,alshedivat/tensorflow,Intel-tensorflow/tensorflow,aldian/tensorflow,arborh/tensorflow,allenlavoie/tensorflow,alshedivat/tensorflow,davidzchen/tensorflow,arborh/tensorflow,ghchinoy/tensorflow,kobejean/tensorflow,davidzchen/tensorflow,frreiss/tensorflow-fred,gautam1858/tensorflow,girving/tensorflow,tensorflow/tensorflow-pywrap_saved_model,allenlavoie/tensorflow,girving/tensorflow,ZhangXinNan/tensorflow,sarvex/tensorflow,aam-at/tensorflow,dancingdan/tensorflow,ppwwyyxx/tensorflow,benoitsteiner/tensorflow-xsmm,jart/tensorflow,kobejean/tensorflow,xodus7/tensorflow,cxxgtxy/tensorflow,davidzchen/tensorflow,manipopopo/tensorflow,allenlavoie/tensorflow,benoitsteiner/tensorflow-xsmm,DavidNorman/tensorflow,yanchen036/tensorflow,frreiss/tensorflow-fred,yongtang/tensorflow,petewarden/tensorflow,gunan/tensorflow,yanchen036/tensorflow,dendisuhubdy/tensorflow,ZhangXinNan/tensorflow,gojira/tensorflow,karllessard/tensorflow,Intel-tensorflow/tensorflow,ageron/tensorflow,aam-at/tensorflow,jbedorf/tensorflow,eaplatanios/tensorflow,dongjoon-hyun/tensorflow,caisq/tensorflow,arborh/tensorflow,xodus7/tensorflow,jhseu/tensorflow,frreiss/tensorflow-fred,dancingdan/tensorflow,caisq/tensorflow,alshedivat/tensorflow,dongjoon-hyun/tensorflow,Bismarrck/tensorflow,jart/tensorflow,paolodedios/tensorflow,dendisuhubdy/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,adit-chandra/tensorflow,jbedorf/tensorflow,hehongliang/tensorflow,apark263/tensorflow,Bismarrck/tensorflow,alsrgv/tensorflow,paolodedios/tensorflow,cxxgtxy/tensorflow,jbedorf/tensorflow,asimshankar/tensorflow,manipopopo/tensorflow,arborh/tensorflow,apark263/tensorflow,Xeralux/tensorflow,ageron/tensorflow,drpngx/tensorflow,manipopopo/tensorflow,jhseu/tensorflow,ghchinoy/tensorflow,Bismarrck/tensorflow,Bismarrck/tensorflow,AnishShah/tensorflow,theflofly/tensorflow,kevin-coder/tensorflow-fork,alshedivat/tensorflow,dongjoon-hyun/tensorflow,AnishShah/tensorflow,annarev/tensorflow,allenlavoie/tensorflow,aselle/tensorflow,meteorcloudy/tensorflow,karllessard/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,ppwwyyxx/tensorflow,Intel-Corporation/tensorflow,alshedivat/tensorflow,lukeiwanski/tensorflow,tensorflow/tensorflow,yongtang/tensorflow,alsrgv/tensorflow,dancingdan/tensorflow,jalexvig/tensorflow,Intel-tensorflow/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,snnn/tensorflow,paolodedios/tensorflow,hfp/tensorflow-xsmm,aam-at/tensorflow,freedomtan/tensorflow,jendap/tensorflow,snnn/tensorflow,eaplatanios/tensorflow,arborh/tensorflow,AnishShah/tensorflow,paolodedios/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,jart/tensorflow,asimshankar/tensorflow,allenlavoie/tensorflow,benoitsteiner/tensorflow-xsmm,ZhangXinNan/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,adit-chandra/tensorflow,renyi533/tensorflow,davidzchen/tensorflow,jbedorf/tensorflow,dongjoon-hyun/tensorflow,xzturn/tensorflow,aselle/tensorflow,AnishShah/tensorflow,gunan/tensorflow,benoitsteiner/tensorflow-xsmm,nburn42/tensorflow,xodus7/tensorflow,jhseu/tensorflow,ppwwyyxx/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,freedomtan/tensorflow,aam-at/tensorflow,frreiss/tensorflow-fred,drpngx/tensorflow,davidzchen/tensorflow,jhseu/tensorflow,meteorcloudy/tensorflow,gautam1858/tensorflow,jbedorf/tensorflow,jart/tensorflow,yongtang/tensorflow,ppwwyyxx/tensorflow,gojira/tensorflow,Bismarrck/tensorflow,nburn42/tensorflow,seanli9jan/tensorflow,alsrgv/tensorflow,dancingdan/tensorflow,brchiu/tensorflow,aselle/tensorflow,annarev/tensorflow,gautam1858/tensorflow,cxxgtxy/tensorflow,eaplatanios/tensorflow,gunan/tensorflow,annarev/tensorflow,adit-chandra/tensorflow,gautam1858/tensorflow,gunan/tensorflow,Xeralux/tensorflow,xodus7/tensorflow,annarev/tensorflow,ZhangXinNan/tensorflow,DavidNorman/tensorflow,davidzchen/tensorflow,gunan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,jbedorf/tensorflow,ppwwyyxx/tensorflow,caisq/tensorflow,sarvex/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,alshedivat/tensorflow,snnn/tensorflow,hehongliang/tensorflow,AnishShah/tensorflow,jalexvig/tensorflow,adit-chandra/tensorflow,lukeiwanski/tensorflow,brchiu/tensorflow,seanli9jan/tensorflow,kevin-coder/tensorflow-fork,xzturn/tensorflow,snnn/tensorflow,frreiss/tensorflow-fred,kobejean/tensorflow,benoitsteiner/tensorflow-xsmm,lukeiwanski/tensorflow,drpngx/tensorflow,aselle/tensorflow,kevin-coder/tensorflow-fork,jalexvig/tensorflow,freedomtan/tensorflow,apark263/tensorflow,Intel-Corporation/tensorflow,lukeiwanski/tensorflow,xodus7/tensorflow,annarev/tensorflow,snnn/tensorflow,jbedorf/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,theflofly/tensorflow,annarev/tensorflow,Xeralux/tensorflow,aselle/tensorflow,cxxgtxy/tensorflow,gautam1858/tensorflow,arborh/tensorflow,sarvex/tensorflow,brchiu/tensorflow,brchiu/tensorflow,dongjoon-hyun/tensorflow,arborh/tensorflow,frreiss/tensorflow-fred,xzturn/tensorflow,sarvex/tensorflow,dendisuhubdy/tensorflow,ppwwyyxx/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,DavidNorman/tensorflow,snnn/tensorflow,hfp/tensorflow-xsmm,chemelnucfin/tensorflow,alsrgv/tensorflow,manipopopo/tensorflow,xodus7/tensorflow,hfp/tensorflow-xsmm,renyi533/tensorflow,gojira/tensorflow,jbedorf/tensorflow,paolodedios/tensorflow,ghchinoy/tensorflow,karllessard/tensorflow,hfp/tensorflow-xsmm,snnn/tensorflow