"Write Code in Your Editor": Split step 5 into 2 steps (#10832)
"Write Code in Your Editor": Split step 5 into 2 steps (#10832)

* "Write Code in Your Editor": Split step 5 into 2 steps

To me it wasn't clear (enough) that I had to copy the file's content from [here](https://codepen.io/gaearon/pen/oWWQNa?editors=0010) *and* add the three lines to the top.

* Update tutorial.md

silvestrijonathan/react,flarnie/react,ArunTesco/react,mjackson/react,jorrit/react,mjackson/react,camsong/react,chenglou/react,prometheansacrifice/react,dilidili/react,empyrical/react,acdlite/react,empyrical/react,krasimir/react,camsong/react,billfeller/react,STRML/react,mjackson/react,empyrical/react,trueadm/react,terminatorheart/react,facebook/react,krasimir/react,kaushik94/react,chenglou/react,pyitphyoaung/react,TheBlasfem/react,billfeller/react,Simek/react,maxschmeling/react,chicoxyzzy/react,brigand/react,yangshun/react,nhunzaker/react,chicoxyzzy/react,quip/react,jzmq/react,kaushik94/react,yangshun/react,cpojer/react,glenjamin/react,terminatorheart/react,yiminghe/react,camsong/react,mhhegazy/react,jameszhan/react,roth1002/react,chicoxyzzy/react,ericyang321/react,ericyang321/react,ericyang321/react,brigand/react,Simek/react,quip/react,glenjamin/react,aickin/react,tomocchino/react,glenjamin/react,TheBlasfem/react,jorrit/react,mhhegazy/react,pyitphyoaung/react,pyitphyoaung/react,yangshun/react,VioletLife/react,tomocchino/react,roth1002/react,yangshun/react,cpojer/react,mosoft521/react,cpojer/react,syranide/react,pyitphyoaung/react,apaatsio/react,ArunTesco/react,yungsters/react,yangshun/react,nhunzaker/react,jdlehman/react,chenglou/react,quip/react,mosoft521/react,empyrical/react,cpojer/react,yangshun/react,jzmq/react,chenglou/react,maxschmeling/react,camsong/react,facebook/react,krasimir/react,dilidili/react,jorrit/react,jorrit/react,quip/react,jzmq/react,kaushik94/react,trueadm/react,Simek/react,nhunzaker/react,rickbeerendonk/react,glenjamin/react,billfeller/react,chenglou/react,quip/react,anushreesubramani/react,prometheansacrifice/react,glenjamin/react,kaushik94/react,roth1002/react,rickbeerendonk/react,Simek/react,yungsters/react,aickin/react,silvestrijonathan/react,STRML/react,flarnie/react,empyrical/react,maxschmeling/react,aickin/react,yungsters/react,jzmq/react,jdlehman/react,dilidili/react,tomocchino/react,jameszhan/react,VioletLife/react,jzmq/react,jameszhan/react,jdlehman/react,apaatsio/react,camsong/react,ericyang321/react,TheBlasfem/react,kaushik94/react,brigand/react,VioletLife/react,rickbeerendonk/react,krasimir/react,kaushik94/react,tomocchino/react,yungsters/react,terminatorheart/react,aickin/react,rickbeerendonk/react,roth1002/react,krasimir/react,aickin/react,dilidili/react,apaatsio/react,quip/react,mosoft521/react,trueadm/react,anushreesubramani/react,prometheansacrifice/react,VioletLife/react,billfeller/react,facebook/react,mjackson/react,pyitphyoaung/react,nhunzaker/react,nhunzaker/react,anushreesubramani/react,chicoxyzzy/react,maxschmeling/react,mosoft521/react,terminatorheart/react,brigand/react,tomocchino/react,acdlite/react,yangshun/react,jameszhan/react,acdlite/react,prometheansacrifice/react,mhhegazy/react,pyitphyoaung/react,VioletLife/react,brigand/react,apaatsio/react,flarnie/react,krasimir/react,maxschmeling/react,billfeller/react,cpojer/react,flarnie/react,yungsters/react,mjackson/react,maxschmeling/react,aickin/react,anushreesubramani/react,jameszhan/react,tomocchino/react,acdlite/react,STRML/react,rickbeerendonk/react,rricard/react,nhunzaker/react,VioletLife/react,apaatsio/react,kaushik94/react,chicoxyzzy/react,camsong/react,rricard/react,tomocchino/react,STRML/react,acdlite/react,yungsters/react,terminatorheart/react,flarnie/react,empyrical/react,syranide/react,quip/react,silvestrijonathan/react,dilidili/react,dilidili/react,trueadm/react,jdlehman/react,empyrical/react,mhhegazy/react,apaatsio/react,mosoft521/react,jdlehman/react,jorrit/react,facebook/react,maxschmeling/react,mosoft521/react,ericyang321/react,ericyang321/react,mjackson/react,dilidili/react,rickbeerendonk/react,TheBlasfem/react,silvestrijonathan/react,flarnie/react,prometheansacrifice/react,aickin/react,jdlehman/react,yungsters/react,glenjamin/react,Simek/react,ArunTesco/react,cpojer/react,yiminghe/react,yiminghe/react,prometheansacrifice/react,jameszhan/react,brigand/react,rricard/react,apaatsio/react,jdlehman/react,nhunzaker/react,silvestrijonathan/react,jzmq/react,trueadm/react,Simek/react,TheBlasfem/react,flarnie/react,VioletLife/react,acdlite/react,TheBlasfem/react,rricard/react,pyitphyoaung/react,trueadm/react,jorrit/react,silvestrijonathan/react,jorrit/react,roth1002/react,glenjamin/react,krasimir/react,terminatorheart/react,mhhegazy/react,acdlite/react,Simek/react,chenglou/react,rricard/react,anushreesubramani/react,syranide/react,jzmq/react,jameszhan/react,billfeller/react,facebook/react,brigand/react,mjackson/react,rricard/react,chicoxyzzy/react,chicoxyzzy/react,camsong/react,mosoft521/react,syranide/react,roth1002/react,facebook/react,prometheansacrifice/react,trueadm/react,silvestrijonathan/react,yiminghe/react,roth1002/react,chenglou/react,yiminghe/react,STRML/react,STRML/react,mhhegazy/react,yiminghe/react,cpojer/react,yiminghe/react,anushreesubramani/react,billfeller/react,STRML/react,anushreesubramani/react,facebook/react,mhhegazy/react,rickbeerendonk/react,ericyang321/react