Above doesn\'t work first time, works 2nd time.
Try to set ruby version to 2.0.0 for any new shell windows.
Doing
$ rvm use 2.0.0 --default <
I cleaned out everything that had a .rvm in it from my PATH= line in my .zshrc
That fixed the issue for me, where the other answers here (sourcing the rvm script, or getting stable with auto dotfiles) didn't.