Fix GistViewCommand.gist_filename()
Fix GistViewCommand.gist_filename()

condemil/Gist,ecode/Gist,ryanmaclean/Gist,ryanmaclean/Gist,ecode/Gist,Ideabin/Gist,NetoBuenrostro/Gist,Ideabin/Gist,NetoBuenrostro/Gist