git tree should be beautiful
switch to non-standard fuzzy.vim mappings
NERDTree customizations

I have a pretty big screen, and vim is basically always maximized.
NERDTree should be wider. Also, I want to open directories with a single
click.
update rbenv in bashrc

the new version of rbenv has a different snippet to include in your
bashrc. This patch updates the snippet
add customisation for new mdpp sidebar features
script to do quick arithmetic from bash
Merge branch 'master' of github.com:simonhicks/dotfiles