Add a README.md to apprtc directory.
Add a README.md to apprtc directory.

The README initially contains how to run AppRTC locally.

procandi/samples,samdutton/apprtc,ralic/samples,tsruban/samples,knightsofaa/webrtc,aadebuger/docker-apprtc,dushmis/webrtc,virajs/apprtc,mulyoved/samples,fetterov/samples,overtakermtg/samples,shelsonjava/apprtc,procandi/apprtc,xdumaine/samples,calebboyd/adapter,EmreAkkoyun/sample,samdutton/webrtc,webrtc/samples,mulyoved/samples,webrtc/apprtc,martin7890/samples,MahmoudFouad/samples,bpyoung92/apprtc,YouthAndra/apprtc,diddie06/webrtc,mvenkatesh431/apprtc,mvenkatesh431/apprtc,volkanh/volkanh.github.io,oliverhuangchao/samples,knightsofaa/webrtc,procandi/apprtc,dengshaodong/docker-apprtc,mauricionr/samples,samdutton/apprtc,fitraditya/samples,tsruban/samples,bemasc/samples,Roarz/samples,todotobe1/samples,arnauorriols/apprtc,TribeMedia/apprtc,juberti/samples,Acidburn0zzz/adapter,martin7890/samples,calebboyd/adapter,dengshaodong/docker-apprtc,fippo/apprtc,YouthAndra/apprtc,TheKnarf/apprtc,bbandaru/samples,arnauorriols/apprtc,aadebuger/docker-apprtc,fippo/apprtc,82488059/apprtc,pquochoang/samples,mvenkatesh431/samples,fitraditya/samples,virajs/apprtc,virajs/apprtc,webrtc/adapter,aadebuger/docker-apprtc,TribeMedia/apprtc,bpyoung92/apprtc,EmreAkkoyun/sample,fetterov/samples,jiayliu/apprtc,dajise/samples,bpyoung92/apprtc,TribeMedia/apprtc,todotobe1/apprtc,smadhusu/AppRTC,taylor-b/samples,4lejandrito/adapter,TribeMedia/apprtc,TribeMedia/apprtc,procandi/samples,smayoorans/samples,overtakermtg/samples,MahmoudFouad/samples,overtakermtg/samples,b-cuts/samples,procandi/apprtc,smayoorans/samples,smadhusu/AppRTC,xdumaine/adapter,todotobe1/samples,Edward-Shawn/samples,jan-ivar/adapter,jarl-alejandro/apprtc,jjrasche/cell-based-RC-control,shelsonjava/apprtc,webrtc/apprtc,JiYou/apprtc,b-cuts/samples,aadebuger/docker-apprtc,kod3r/samples,82488059/apprtc,shelsonjava/samples,Zauberstuhl/adapter,dengshaodong/docker-apprtc,jarl-alejandro/apprtc,kod3r/samples,shaohung001/samples,JiYou/apprtc,aadebuger/docker-apprtc,mvenkatesh431/apprtc,oliverhuangchao/samples,procandi/apprtc,smadhusu/AppRTC,82488059/apprtc,shelsonjava/samples,shines/adapter,YouthAndra/apprtc,akashrchoksi/newone,samdutton/apprtc,mauricionr/samples,arnauorriols/apprtc,Zauberstuhl/adapter,mvenkatesh431/apprtc,jiayliu/apprtc,arnauorriols/apprtc,pquochoang/samples,leehz/samples,bemasc/samples,todotobe1/samples,bpyoung92/apprtc,Zauberstuhl/adapter,taylor-b/samples,virajs/samples,samdutton/apprtc,ralic/samples,askdaddy/samples,jan-ivar/samples,oliverhuangchao/samples,mauricionr/samples,procandi/samples,procandi/apprtc,xdumaine/samples,webrtc/apprtc,jjrasche/cell-based-RC-control,shelsonjava/apprtc,xdumaine/adapter,xdumaine/samples,smbale/samples,TheKnarf/apprtc,jjrasche/cell-based-RC-control,fippo/apprtc,martin7890/samples,myself659/samples,bbandaru/samples,dajise/samples,ralic/samples,Roarz/samples,virajs/apprtc,shines/adapter,shaohung001/samples,TribeMedia/samples,TribeMedia/samples,volkanh/volkanh.github.io,virajs/samples,todotobe1/apprtc,mulyoved/samples,Acidburn0zzz/adapter,fippo/webrtc,b-cuts/samples,bemasc/samples,akashrchoksi/newone,dengshaodong/docker-apprtc,samdutton/apprtc,JiYou/apprtc,jarl-alejandro/apprtc,jan-ivar/samples,4lejandrito/adapter,mvenkatesh431/apprtc,dushmis/webrtc,harme199497/adapter,jiayliu/apprtc,keshwans/samples,4lejandrito/adapter,samdutton/webrtc,jarl-alejandro/apprtc,leehz/samples,dengshaodong/docker-apprtc,Roarz/samples,JiYou/apprtc,TribeMedia/samples,webrtc/samples,TheKnarf/apprtc,fippo/webrtc,kod3r/samples,myself659/samples,myself659/samples,jan-ivar/adapter,shelsonjava/samples,smbale/samples,akashrchoksi/newone,smadhusu/AppRTC,todotobe1/apprtc,fippo/apprtc,JiYou/apprtc,juberti/samples,82488059/apprtc,webrtc/adapter,webrtc/apprtc,fetterov/samples,pquochoang/samples,smbale/samples,YouthAndra/apprtc,todotobe1/apprtc,smadhusu/AppRTC,volkanh/volkanh.github.io,jarl-alejandro/apprtc,EmreAkkoyun/sample,arnauorriols/apprtc,Acidburn0zzz/adapter,TheKnarf/apprtc,Edward-Shawn/samples,askdaddy/samples,keshwans/samples,todotobe1/apprtc,fitraditya/samples,dajise/samples,virajs/apprtc,mvenkatesh431/samples,82488059/apprtc,virajs/samples,tsruban/samples,smayoorans/samples,jiayliu/apprtc,webrtc/apprtc,TheKnarf/apprtc,leehz/samples,jiayliu/apprtc,jjrasche/cell-based-RC-control,MahmoudFouad/samples,Edward-Shawn/samples,YouthAndra/apprtc,guoweis/webrtc,harme199497/adapter,mvenkatesh431/samples,calebboyd/adapter,fippo/apprtc,harme199497/adapter,bpyoung92/apprtc,shines/adapter,diddie06/webrtc,bbandaru/samples,shelsonjava/apprtc,shelsonjava/apprtc,guoweis/webrtc,guoweis/webrtc