Adds the Python path.
Updates to the README.
Adds Markdown Vim mode submodule.
Removes the vim-markdown submodule.
Adds the vim-pandoc bundle.
Updates to the pandoc syntax colouring. And stops it folding.
Removes Ruby support (rbenv, etc.) from bash.

I never use Ruby anymore, and it makes new terminal sessions terribly slow.
Adds syntastic, and updates it.
Enables Syntastic support for most languages.
Merge branch 'master' of github.com:nickcharlton/dotfiles