RVM is not a function, selecting rubies with 'rvm use ...' will not work
Your console is not running as a login shell and hence have no access to rvm function. If you are running Ubuntu, you can:
- Open console
- Select Edit -> Profile Preferences
- Select tab: Title and Command
- Check box 'Run command as a login shell'
- Restart terminal
Type bash --login from your terminal. And then give rvm use 2.0.0