VI mode didn't work out for me
Add a git total contributors function

An engineer from pittsburgh was visiting and wanted to know how many people had worked on different codebases.  This adds a command to find out quickly
Clean up path variables
Switching to the silver searcher

David showed me ag which looks much faster than ack (but doesn't support patterns). I have used patterns with ack ONCE since I installed it over a year ago so I'll take the speed.  This changes aliases ag to ack (because it's how I'll remember to use it) and sets up Ack.vim to take advantage of AG.

Thanks, David.