Update the folly/README
Update the folly/README

Summary: Now that we have an Overview.md.

Test Plan: None.


Orvid/folly,leolujuyi/folly,tempbottle/folly,Orvid/folly,Hincoin/folly,Orvid/folly,KSreeHarsha/folly,renyinew/folly,tempbottle/folly,loverszhaokai/folly,renyinew/folly,nickhen/folly,zhiweicai/folly,chjp2046/folly,jbandela/folly,wildinto/folly,nickhen/folly,ykarlsbrun/folly,bikong2/folly,bowlofstew/folly,juniway/folly,Orvid/folly,stonegithubs/folly,cole14/folly,juniway/folly,SammyK/folly,gaoyingie/folly,hongliangzhao/folly,clearlylin/folly,rklabs/folly,sakishum/folly,shaobz/folly,facebook/folly,theiver9827/folly,alexst07/folly,KSreeHarsha/folly,zhiweicai/folly,stonegithubs/folly,ykarlsbrun/folly,raphaelamorim/folly,raphaelamorim/folly,CJstar/folly,arg0/folly,gaoyingie/folly,arg0/folly,bowlofstew/folly,kernelim/folly,stonegithubs/folly,cole14/folly,loversInJapan/folly,Hincoin/folly,bobegir/folly,juniway/folly,xzmagic/folly,reddit/folly,cppfool/folly,facebook/folly,gavioto/folly,PPC64/folly,ajtulloch/folly,wildinto/folly,gaoyingie/folly,jbandela/folly,sakishum/folly,ykarlsbrun/folly,CJstar/folly,jbandela/folly,renyinew/folly,reddit/folly,renyinew/folly,guker/folly,tempbottle/folly,gaoyingie/folly,floxard/folly,Hincoin/folly,PoisonBOx/folly,upsoft/folly,doctaweeks/folly,gavioto/folly,project-zerus/folly,clearlylin/folly,clearlylin/folly,alexst07/folly,KSreeHarsha/folly,cole14/folly,doctaweeks/folly,ykarlsbrun/folly,kernelim/folly,fw1121/folly,facebook/folly,tomhughes/folly,ajtulloch/folly,hongliangzhao/folly,yangjin-unique/folly,unmeshvrije/C--,reddit/folly,xzmagic/folly,clearlinux/folly,fw1121/folly,lifei/folly,loversInJapan/folly,alexst07/folly,CJstar/folly,xzmagic/folly,bobegir/folly,Eagle-X/folly,charsyam/folly,Orvid/folly,leolujuyi/folly,bobegir/folly,cppfool/folly,gaoyingie/folly,charsyam/folly,constantine001/folly,tempbottle/folly,chjp2046/folly,project-zerus/folly,sonnyhu/folly,fw1121/folly,arg0/folly,theiver9827/folly,theiver9827/folly,clearlinux/folly,CJstar/folly,constantine001/folly,clearlinux/folly,unmeshvrije/C--,Hincoin/folly,charsyam/folly,loverszhaokai/folly,wildinto/folly,Eagle-X/folly,sonnyhu/folly,leolujuyi/folly,Eagle-X/folly,tomhughes/folly,clearlinux/folly,cppfool/folly,floxard/folly,raphaelamorim/folly,mqeizi/folly,romange/folly,raphaelamorim/folly,sonnyhu/folly,unmeshvrije/C--,brunomorishita/folly,upsoft/folly,bowlofstew/folly,cole14/folly,bikong2/folly,yangjin-unique/folly,hongliangzhao/folly,SeanRBurton/folly,project-zerus/folly,bsampath/folly,hongliangzhao/folly,guker/folly,juniway/folly,colemancda/folly,yangjin-unique/folly,theiver9827/folly,cppfool/folly,tomhughes/folly,SeanRBurton/folly,SammyK/folly,gavioto/folly,hongliangzhao/folly,leolujuyi/folly,SeanRBurton/folly,floxard/folly,constantine001/folly,bsampath/folly,SammyK/folly,bsampath/folly,alexst07/folly,SeanRBurton/folly,yangjin-unique/folly,shaobz/folly,mqeizi/folly,upsoft/folly,ajtulloch/folly,colemancda/folly,mqeizi/folly,cppfool/folly,raphaelamorim/folly,zhiweicai/folly,Eagle-X/folly,PPC64/folly,zhiweicai/folly,guker/folly,chjp2046/folly,brunomorishita/folly,romange/folly,SeanRBurton/folly,chjp2046/folly,kernelim/folly,leolujuyi/folly,fw1121/folly,sakishum/folly,PPC64/folly,stonegithubs/folly,bowlofstew/folly,tomhughes/folly,nickhen/folly,nickhen/folly,ykarlsbrun/folly,xzmagic/folly,Hincoin/folly,bobegir/folly,romange/folly,sakishum/folly,doctaweeks/folly,kernelim/folly,facebook/folly,fw1121/folly,loverszhaokai/folly,sonnyhu/folly,unmeshvrije/C--,kernelim/folly,wildinto/folly,gavioto/folly,bikong2/folly,cole14/folly,bikong2/folly,loverszhaokai/folly,loversInJapan/folly,unmeshvrije/C--,lifei/folly,charsyam/folly,PPC64/folly,shaobz/folly,sonnyhu/folly,project-zerus/folly,arg0/folly,alexst07/folly,brunomorishita/folly,constantine001/folly,loversInJapan/folly,shaobz/folly,theiver9827/folly,bobegir/folly,rklabs/folly,mqeizi/folly,PoisonBOx/folly,PoisonBOx/folly,yangjin-unique/folly,unmeshvrije/C--,nickhen/folly,doctaweeks/folly,renyinew/folly,arg0/folly,brunomorishita/folly,tempbottle/folly,shaobz/folly,SammyK/folly,brunomorishita/folly,romange/folly,colemancda/folly,KSreeHarsha/folly,romange/folly,PPC64/folly,upsoft/folly,zhiweicai/folly,bsampath/folly,rklabs/folly,project-zerus/folly,colemancda/folly,rklabs/folly,tomhughes/folly,facebook/folly,juniway/folly,wildinto/folly,lifei/folly,floxard/folly,rklabs/folly,floxard/folly,stonegithubs/folly,bsampath/folly,lifei/folly,SammyK/folly,guker/folly,lifei/folly,xzmagic/folly,PoisonBOx/folly,upsoft/folly,KSreeHarsha/folly,chjp2046/folly,loverszhaokai/folly,Eagle-X/folly,CJstar/folly,gavioto/folly,loversInJapan/folly,reddit/folly,constantine001/folly,colemancda/folly,PoisonBOx/folly,clearlylin/folly,bikong2/folly,bowlofstew/folly,doctaweeks/folly,sakishum/folly,clearlinux/folly,mqeizi/folly,clearlylin/folly,reddit/folly,guker/folly