Add Avdi Grimm's rake episodes 5–7 to README
Add Avdi Grimm's rake episodes 5–7 to README

zzak/rake,ruby/rake,88rabbit/rake,ruby/rake,ipmobiletech/rake,taiganakagawa/rake,askl56/rake,bentley/rake,envato/rake,jaustinhughey/rake,utilum/rake,codedogfish/rake,esasse/rake,Vanzct/rake,pjump/rake,tmornini/rake,envato/rake