Update README's example
Update README's example

According to current React version, when I use `React.render`, console shows `React.render is deprecated. Please use ReactDOM.render from require('react-dom') instead.`.

So this PR is a tiny update for the README example.
bspaulding/react,empyrical/react,yuhualingfeng/react,rricard/react,usgoodus/react,Simek/react,facebook/react,jontewks/react,mhhegazy/react,chenglou/react,conorhastings/react,mhhegazy/react,cpojer/react,yuhualingfeng/react,claudiopro/react,yuhualingfeng/react,jameszhan/react,dittos/react,yungsters/react,rohannair/react,chippieTV/react,brigand/react,silvestrijonathan/react,TaaKey/react,marocchino/react,reactjs-vn/reactjs_vndev,billfeller/react,edmellum/react,dilidili/react,theseyi/react,edvinerikson/react,niubaba63/react,leexiaosi/react,tom-wang/react,claudiopro/react,rlugojr/react,krasimir/react,jdlehman/react,rlugojr/react,jquense/react,zeke/react,facebook/react,bspaulding/react,terminatorheart/react,ameyms/react,eoin/react,nhunzaker/react,theseyi/react,trueadm/react,TaaKey/react,flipactual/react,kaushik94/react,glenjamin/react,jquense/react,flarnie/react,microlv/react,shergin/react,jimfb/react,jimfb/react,tom-wang/react,roth1002/react,DJCordhose/react,ameyms/react,salzhrani/react,dortonway/react,jontewks/react,jordanpapaleo/react,jameszhan/react,leexiaosi/react,chicoxyzzy/react,with-git/react,mhhegazy/react,wmydz1/react,claudiopro/react,aaron-goshine/react,mosoft521/react,glenjamin/react,aaron-goshine/react,quip/react,cpojer/react,syranide/react,ArunTesco/react,quip/react,staltz/react,aickin/react,brigand/react,krasimir/react,jameszhan/react,silvestrijonathan/react,ABaldwinHunter/react-classic,aaron-goshine/react,usgoodus/react,kaushik94/react,ABaldwinHunter/react-classic,mosoft521/react,krasimir/react,reactkr/react,jdlehman/react,VioletLife/react,ashwin01/react,flarnie/react,reactjs-vn/reactjs_vndev,hejld/react,brigand/react,VioletLife/react,rricard/react,iamchenxin/react,pswai/react,TheBlasfem/react,miaozhirui/react,dilidili/react,VioletLife/react,ericyang321/react,niubaba63/react,anushreesubramani/react,rickbeerendonk/react,ameyms/react,theseyi/react,edvinerikson/react,billfeller/react,nathanmarks/react,trueadm/react,yungsters/react,hejld/react,ericyang321/react,rohannair/react,terminatorheart/react,rickbeerendonk/react,dmitriiabramov/react,aickin/react,terminatorheart/react,tom-wang/react,TaaKey/react,mhhegazy/react,edvinerikson/react,ABaldwinHunter/react-engines,quip/react,camsong/react,maxschmeling/react,jorrit/react,edmellum/react,reactjs-vn/reactjs_vndev,leexiaosi/react,niubaba63/react,STRML/react,aickin/react,richiethomas/react,shergin/react,theseyi/react,chicoxyzzy/react,empyrical/react,ashwin01/react,rlugojr/react,STRML/react,yiminghe/react,syranide/react,apaatsio/react,krasimir/react,brigand/react,rickbeerendonk/react,eoin/react,ashwin01/react,jimfb/react,andrerpena/react,richiethomas/react,jimfb/react,prometheansacrifice/react,flipactual/react,nathanmarks/react,glenjamin/react,STRML/react,jordanpapaleo/react,yangshun/react,zeke/react,jquense/react,rickbeerendonk/react,apaatsio/react,pswai/react,staltz/react,acdlite/react,with-git/react,joaomilho/react,krasimir/react,eoin/react,TaaKey/react,richiethomas/react,nhunzaker/react,iamchenxin/react,terminatorheart/react,dortonway/react,Simek/react,pandoraui/react,dortonway/react,empyrical/react,silvestrijonathan/react,ericyang321/react,rlugojr/react,syranide/react,camsong/react,linmic/react,facebook/react,rohannair/react,salier/react,kaushik94/react,rohannair/react,claudiopro/react,cpojer/react,wmydz1/react,iamchenxin/react,pyitphyoaung/react,krasimir/react,silvestrijonathan/react,chippieTV/react,pandoraui/react,usgoodus/react,acdlite/react,dittos/react,pswai/react,jzmq/react,rohannair/react,nhunzaker/react,yiminghe/react,jdlehman/react,jzmq/react,pyitphyoaung/react,with-git/react,jorrit/react,jzmq/react,shergin/react,anushreesubramani/react,mosoft521/react,cody/react,edvinerikson/react,tom-wang/react,sekiyaeiji/react,yangshun/react,aaron-goshine/react,jorrit/react,anushreesubramani/react,ABaldwinHunter/react-engines,roth1002/react,airondumael/react,chippieTV/react,jameszhan/react,marocchino/react,VioletLife/react,acdlite/react,tlwirtz/react,ArunTesco/react,tomocchino/react,DJCordhose/react,prometheansacrifice/react,mosoft521/react,jzmq/react,yiminghe/react,airondumael/react,sekiyaeiji/react,jzmq/react,tlwirtz/react,jameszhan/react,yangshun/react,chenglou/react,pandoraui/react,elquatro/react,dortonway/react,jordanpapaleo/react,mhhegazy/react,DJCordhose/react,pswai/react,mgmcdermott/react,nickdima/react,eoin/react,chicoxyzzy/react,anushreesubramani/react,TaaKey/react,nhunzaker/react,joecritch/react,glenjamin/react,ABaldwinHunter/react-classic,hejld/react,pyitphyoaung/react,jordanpapaleo/react,andrerpena/react,aickin/react,richiethomas/react,rricard/react,yangshun/react,prometheansacrifice/react,salzhrani/react,ericyang321/react,aaron-goshine/react,AlmeroSteyn/react,chenglou/react,miaozhirui/react,mjackson/react,jorrit/react,staltz/react,jordanpapaleo/react,AlmeroSteyn/react,conorhastings/react,chenglou/react,joecritch/react,marocchino/react,ABaldwinHunter/react-engines,andrerpena/react,jquense/react,TaaKey/react,apaatsio/react,bspaulding/react,miaozhirui/react,maxschmeling/react,pandoraui/react,billfeller/react,rricard/react,apaatsio/react,dilidili/react,staltz/react,reactkr/react,mgmcdermott/react,microlv/react,andrerpena/react,trueadm/react,tlwirtz/react,conorhastings/react,yuhualingfeng/react,shergin/react,silvestrijonathan/react,salzhrani/react,prometheansacrifice/react,AlmeroSteyn/react,nathanmarks/react,mosoft521/react,with-git/react,anushreesubramani/react,ABaldwinHunter/react-engines,jontewks/react,shergin/react,DJCordhose/react,ABaldwinHunter/react-classic,ABaldwinHunter/react-classic,tom-wang/react,Simek/react,tlwirtz/react,aickin/react,linmic/react,chippieTV/react,apaatsio/react,iamchenxin/react,reactkr/react,quip/react,mgmcdermott/react,ashwin01/react,VioletLife/react,pyitphyoaung/react,reactkr/react,aickin/react,tomocchino/react,flarnie/react,VioletLife/react,pyitphyoaung/react,yungsters/react,maxschmeling/react,prometheansacrifice/react,cody/react,ameyms/react,shergin/react,salier/react,jontewks/react,theseyi/react,cpojer/react,ABaldwinHunter/react-engines,STRML/react,rlugojr/react,miaozhirui/react,jzmq/react,billfeller/react,dmitriiabramov/react,billfeller/react,roth1002/react,maxschmeling/react,jdlehman/react,mgmcdermott/react,mosoft521/react,reactkr/react,niubaba63/react,linmic/react,tlwirtz/react,acdlite/react,rlugojr/react,dortonway/react,yiminghe/react,wmydz1/react,reactjs-vn/reactjs_vndev,dittos/react,AlmeroSteyn/react,pyitphyoaung/react,salzhrani/react,maxschmeling/react,edvinerikson/react,zeke/react,mgmcdermott/react,rohannair/react,nathanmarks/react,chenglou/react,apaatsio/react,edmellum/react,flipactual/react,aaron-goshine/react,camsong/react,mhhegazy/react,mjackson/react,eoin/react,TheBlasfem/react,marocchino/react,kaushik94/react,marocchino/react,linmic/react,linmic/react,STRML/react,with-git/react,brigand/react,joecritch/react,pandoraui/react,TheBlasfem/react,trueadm/react,chicoxyzzy/react,bspaulding/react,jdlehman/react,nhunzaker/react,mosoft521/react,zeke/react,quip/react,empyrical/react,yangshun/react,tomocchino/react,flarnie/react,dmitriiabramov/react,miaozhirui/react,microlv/react,elquatro/react,usgoodus/react,facebook/react,joaomilho/react,cpojer/react,silvestrijonathan/react,conorhastings/react,trueadm/react,miaozhirui/react,joecritch/react,jquense/react,jorrit/react,yuhualingfeng/react,joaomilho/react,cody/react,bspaulding/react,reactjs-vn/reactjs_vndev,tomocchino/react,zeke/react,salier/react,cody/react,with-git/react,roth1002/react,dittos/react,cody/react,salzhrani/react,camsong/react,STRML/react,ameyms/react,niubaba63/react,bspaulding/react,ArunTesco/react,nickdima/react,hejld/react,anushreesubramani/react,empyrical/react,elquatro/react,joaomilho/react,pswai/react,claudiopro/react,jontewks/react,trueadm/react,niubaba63/react,nhunzaker/react,kaushik94/react,nickdima/react,anushreesubramani/react,jorrit/react,joecritch/react,DJCordhose/react,empyrical/react,quip/react,ericyang321/react,jimfb/react,elquatro/react,nathanmarks/react,VioletLife/react,chicoxyzzy/react,aickin/react,sekiyaeiji/react,andrerpena/react,tlwirtz/react,hejld/react,joaomilho/react,yungsters/react,linmic/react,facebook/react,ericyang321/react,quip/react,TaaKey/react,STRML/react,roth1002/react,ashwin01/react,flarnie/react,microlv/react,wmydz1/react,nickdima/react,zeke/react,glenjamin/react,mjackson/react,cpojer/react,elquatro/react,billfeller/react,dilidili/react,yungsters/react,tomocchino/react,roth1002/react,jdlehman/react,wmydz1/react,salier/react,Simek/react,maxschmeling/react,TheBlasfem/react,dmitriiabramov/react,tom-wang/react,jimfb/react,mhhegazy/react,theseyi/react,claudiopro/react,chippieTV/react,kaushik94/react,edmellum/react,dmitriiabramov/react,camsong/react,nathanmarks/react,marocchino/react,syranide/react,joecritch/react,TheBlasfem/react,billfeller/react,rickbeerendonk/react,pswai/react,niubaba63/react,trueadm/react,brigand/react,kaushik94/react,rohannair/react,richiethomas/react,jdlehman/react,jquense/react,yungsters/react,glenjamin/react,apaatsio/react,richiethomas/react,wmydz1/react,nhunzaker/react,AlmeroSteyn/react,rricard/react,bspaulding/react,cody/react,iamchenxin/react,eoin/react,ashwin01/react,nickdima/react,chicoxyzzy/react,yangshun/react,acdlite/react,dilidili/react,glenjamin/react,salier/react,jameszhan/react,jorrit/react,hejld/react,rickbeerendonk/react,airondumael/react,reactjs-vn/reactjs_vndev,rickbeerendonk/react,salier/react,rricard/react,ericyang321/react,TaaKey/react,staltz/react,wmydz1/react,krasimir/react,microlv/react,TaaKey/react,yiminghe/react,andrerpena/react,chenglou/react,rlugojr/react,ABaldwinHunter/react-engines,jordanpapaleo/react,elquatro/react,yungsters/react,tomocchino/react,iamchenxin/react,reactkr/react,TaaKey/react,prometheansacrifice/react,chippieTV/react,empyrical/react,with-git/react,yangshun/react,roth1002/react,TaaKey/react,mjackson/react,TheBlasfem/react,dmitriiabramov/react,terminatorheart/react,tomocchino/react,usgoodus/react,conorhastings/react,chicoxyzzy/react,airondumael/react,jontewks/react,camsong/react,edvinerikson/react,edvinerikson/react,ameyms/react,Simek/react,dortonway/react,dittos/react,acdlite/react,terminatorheart/react,mjackson/react,acdlite/react,jordanpapaleo/react,facebook/react,flarnie/react,microlv/react,edmellum/react,AlmeroSteyn/react,yiminghe/react,jquense/react,silvestrijonathan/react,prometheansacrifice/react,cpojer/react,ABaldwinHunter/react-classic,shergin/react,DJCordhose/react,Simek/react,dilidili/react,richiethomas/react,mjackson/react,joaomilho/react,dilidili/react,salzhrani/react,yiminghe/react,joecritch/react,claudiopro/react,Simek/react,facebook/react,camsong/react,pyitphyoaung/react,chenglou/react,dittos/react,jameszhan/react,flarnie/react,maxschmeling/react,edmellum/react,jzmq/react,mjackson/react,staltz/react,airondumael/react,conorhastings/react,mgmcdermott/react,AlmeroSteyn/react,brigand/react,usgoodus/react