Updated rake readme to point to the pivotal and the bug reports.
Updated rake readme to point to the pivotal and the bug reports.

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