Added 'find_i' inside this file, instead of being an external script
Added git-extras and gitfast as plugins.

Note: see https://github.com/visionmedia/git-extras

Intallation (One-liner):
(cd /tmp && git clone --depth 1 https://github.com/visionmedia/git-extras.git && cd git-extras && sudo make install)
Uses ls++ if exists