add license information and readme to gemfile
add license information and readme to gemfile

ConradIrwin/jist,ryanbradynd05/gist,dLobatog/gist,defunkt/gist,zmwangx/gist,bchase/gist,mofodox/gist,roxyboy/gist,retrography/gist,ConradIrwin/gist,roxyboy/jist,eLobato/gist,ConradIrwin/gist