Add Emacs and iTerm versions (dark)

Here are some images of the iTerm2 dark colorscheme, ignore the command colors since those are being set by `fish` and not by the theme:
![screen shot 2013-11-24 at 9 09 23 am](https://f.cloud.github.com/assets/2314074/1608857/cca64d2c-551a-11e3-8b85-1adf575a4830.png)
![screen shot 2013-11-24 at 9 09 37 am](https://f.cloud.github.com/assets/2314074/1608858/ce7db838-551a-11e3-815b-c654aa221485.png)

And the Emacs theme, as you can see I haven't configured the rainbow parentheses yet:
![screen shot 2013-11-24 at 9 13 45 am](https://f.cloud.github.com/assets/2314074/1608860/093bd4f0-551b-11e3-96ad-418f1e270607.png)