Clean up documentation and a typo
Clean up documentation and a typo

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