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* the current patch levels hard-coded here are pretty dated. I updated the ruby version helpers to use loose ruby version matchers so they don't continually need to be updated with every new patch level release.

* `rvm get head` actually performs an `rvm reload` in the post install. there's no need to do again here in rvm-update so I've removed that.

+ Originally published by Christopher Chow.
+ Source:
https://github.com/robbyrussell/oh-my-zsh/blob/30620d463850c17f86e7a56fbf6a8b5e793a4e07/plugins/rails3/_rails3
  Commit: 30620d463850c17f86e7a56fbf6a8b5e793a4e07

The original hgic and hgoc aliases worked well for the default path, but attempting to call them with a different path failed. I created functions to handle them instead.

Don't just overwrite the environment. First check for a running agent (an
x-session might have one running). If no agent is found, source the
environment and check again using those settings. If again no agent is
found, start a new instance.

* Add "x" in front of the value we check against...
* Use true instead of yes (more consistent with the rest of ohmyzsh)

The fact that no one seems to have raised this as an issue leads me to believe it's not used that much...

* :t parameter expansion returns the last portion of the path,
  equivalent to basename. I <3 zsh.
* adds comments for the VIRTUAL_ENV_DISABLE_PROMPT,
  used by virtual_env activate

See also:
  http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion

* removes cd override by using chpwd_functions
* removes subshell call to which by using $+commands array and
  c param expansion to find in PATH
* zsh love!

Added strainer & tailor to commands in bundler plugin.

Added berks, foodcritic, kitchen, and knife commands to bundler plugin.

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>