New theme: vibrantink

## Vibrant Ink
This theme features the Vibrant Ink colorscheme, created by Justin Palmer and ported to vim by Jo Vermeulen. I use the vim theme and wanted something to match, so I started porting the scheme to oh my zsh as sensically as possible, tyring to retain the meaning of the colors for a texteditor as I ported them to a shell.

Along the way I added a few other things I either wrote or compiled from other scripts (see the source for extended credits):

  * virtualenv support, so you know when you're in an active virtualenv
  * rvm support, so you know when you're in an active Ruby virtual environment (note: I don't use rvm so this is not well-tested, but it is taken from the gnzh theme on which this theme is loosely based)
  * git support, using a combination of oh my zsh's git tools and a little extra spice I wrote
  * hg support, using stuff I wrote myself (note: hg commands are...slow, and using the shell with hg there is a small delay; let me know if you have ideas for fixes)
  * full customization of the Unicode symbols used in one easy location: the top of the file!
  * fully commented and well-organized to allow for easy modification
  * 256-color terminal support (ooo, pretty!)
  * detects and responds to root and SSH environments

![screenshot](http://i.imgur.com/C6gvO.png)

In the preview above you can see a listing of a git repository, then a change to a file to make the repository dirty.  Then the `workon` command, part of the `virtualenvwrapper` library, is executed to show virtualenv detection and another git repository.