use secure rubygems source, instead of gemcutter
use secure rubygems source, instead of gemcutter

gemcutter doesn't appear to be working. Looks like using secure rubygems
connection is the recommended way to go.

MustWin/switch_user,vkill/switch_user,flyerhzm/switch_user,cyanna/switch_user,MustWin/switch_user,flyerhzm/switch_user,gregmolnar/switch_user,mitsuru/switch_user,vkill/switch_user,cyanna/switch_user,mitsuru/switch_user