Add example for LR scheduler
Add example for LR scheduler

A short and simple example, especially for new users. It helps for a general understanding on how to use this callback. Open for feedback and suggestions. ;)
renyi533/tensorflow,tensorflow/tensorflow,davidzchen/tensorflow,alsrgv/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,adit-chandra/tensorflow,karllessard/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-experimental_link_static_libraries_once,alsrgv/tensorflow,chemelnucfin/tensorflow,arborh/tensorflow,arborh/tensorflow,gunan/tensorflow,sarvex/tensorflow,paolodedios/tensorflow,arborh/tensorflow,tensorflow/tensorflow,DavidNorman/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,ppwwyyxx/tensorflow,freedomtan/tensorflow,paolodedios/tensorflow,karllessard/tensorflow,petewarden/tensorflow,ppwwyyxx/tensorflow,aldian/tensorflow,yongtang/tensorflow,alsrgv/tensorflow,gunan/tensorflow,arborh/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-tensorflow/tensorflow,cxxgtxy/tensorflow,yongtang/tensorflow,davidzchen/tensorflow,ppwwyyxx/tensorflow,adit-chandra/tensorflow,karllessard/tensorflow,arborh/tensorflow,aldian/tensorflow,xzturn/tensorflow,freedomtan/tensorflow,karllessard/tensorflow,annarev/tensorflow,paolodedios/tensorflow,aam-at/tensorflow,petewarden/tensorflow,jhseu/tensorflow,yongtang/tensorflow,yongtang/tensorflow,adit-chandra/tensorflow,gautam1858/tensorflow,aam-at/tensorflow,davidzchen/tensorflow,gautam1858/tensorflow,DavidNorman/tensorflow,xzturn/tensorflow,adit-chandra/tensorflow,ghchinoy/tensorflow,gautam1858/tensorflow,xzturn/tensorflow,gunan/tensorflow,xzturn/tensorflow,tensorflow/tensorflow,freedomtan/tensorflow,cxxgtxy/tensorflow,xzturn/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,cxxgtxy/tensorflow,alsrgv/tensorflow,ppwwyyxx/tensorflow,petewarden/tensorflow,cxxgtxy/tensorflow,ppwwyyxx/tensorflow,petewarden/tensorflow,petewarden/tensorflow,renyi533/tensorflow,sarvex/tensorflow,paolodedios/tensorflow,renyi533/tensorflow,DavidNorman/tensorflow,DavidNorman/tensorflow,adit-chandra/tensorflow,xzturn/tensorflow,renyi533/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow,ghchinoy/tensorflow,annarev/tensorflow,ppwwyyxx/tensorflow,yongtang/tensorflow,davidzchen/tensorflow,jhseu/tensorflow,yongtang/tensorflow,Intel-tensorflow/tensorflow,ghchinoy/tensorflow,yongtang/tensorflow,adit-chandra/tensorflow,ghchinoy/tensorflow,karllessard/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,arborh/tensorflow,gunan/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,gunan/tensorflow,freedomtan/tensorflow,jhseu/tensorflow,frreiss/tensorflow-fred,gunan/tensorflow,petewarden/tensorflow,jhseu/tensorflow,annarev/tensorflow,chemelnucfin/tensorflow,ppwwyyxx/tensorflow,aam-at/tensorflow,chemelnucfin/tensorflow,freedomtan/tensorflow,gunan/tensorflow,frreiss/tensorflow-fred,jhseu/tensorflow,aam-at/tensorflow,frreiss/tensorflow-fred,gautam1858/tensorflow,renyi533/tensorflow,davidzchen/tensorflow,DavidNorman/tensorflow,jhseu/tensorflow,jhseu/tensorflow,petewarden/tensorflow,paolodedios/tensorflow,arborh/tensorflow,Intel-Corporation/tensorflow,karllessard/tensorflow,jhseu/tensorflow,paolodedios/tensorflow,cxxgtxy/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,ghchinoy/tensorflow,arborh/tensorflow,sarvex/tensorflow,adit-chandra/tensorflow,gunan/tensorflow,jhseu/tensorflow,aldian/tensorflow,frreiss/tensorflow-fred,frreiss/tensorflow-fred,Intel-Corporation/tensorflow,chemelnucfin/tensorflow,adit-chandra/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,chemelnucfin/tensorflow,yongtang/tensorflow,freedomtan/tensorflow,aldian/tensorflow,gunan/tensorflow,yongtang/tensorflow,gautam1858/tensorflow,annarev/tensorflow,frreiss/tensorflow-fred,aldian/tensorflow,ghchinoy/tensorflow,jhseu/tensorflow,aldian/tensorflow,annarev/tensorflow,ppwwyyxx/tensorflow,DavidNorman/tensorflow,DavidNorman/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow,paolodedios/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow,davidzchen/tensorflow,xzturn/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,freedomtan/tensorflow,alsrgv/tensorflow,arborh/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,petewarden/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow,ghchinoy/tensorflow,cxxgtxy/tensorflow,freedomtan/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aldian/tensorflow,renyi533/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow,renyi533/tensorflow,jhseu/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,ppwwyyxx/tensorflow,Intel-tensorflow/tensorflow,freedomtan/tensorflow,annarev/tensorflo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