Submodule updates.
Add the [solarized vim][1] color scheme.

This is a very popular one, though I'm not sure I like it on a light
background. It's based on the more general [solarized][2] color scheme.
I'm not sure that I'll use this but it doesn't hurt to have it around.

[1]: https://github.com/altercation/vim-colors-solarized
[2]: http://ethanschoonover.com/solarized
Add [Pyte][1] and [Mayan Smoke][2] color schemes.

[1]: https://github.com/therubymug/vim-pyte
[2]: http://jeetworks.org/mayansmoke