The 'localip' alias had to become a script

I don't want to enable aliases everywhere and that kind of stuff, I don't know
how and I don't care right now.

I just moved the `localip` alias to its own script in bin/ in order to use it in
the tmux status line.
Base16-default dark is now an available vim theme
Add the base16-default (dark) theme to iTerm too
Minor bug fixes in the Rakefile
Polish the Brewfile and some setup/ stuff
Extract the colorscheme sourcing based on hour into its own function
Fine tune some plugin configs
Usual plugin cleanup
Sadly, 'pip' is something I need in order to install stuff
Update some install stuff and docs
Minor vim polishing
Add an RVM prompt to the lambda zsh theme
Ignore dotfiles fucking when installing RVM
Ignore .sass-cache in the NERDTree view
Add a HAML plugin for vim