Add mdcd command for making a directory and changing to it
Some settings for git grep

Taken from this blog post:
http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja/
More vim-abolish settings
Shortcut for stripping invalid UTF-8 chars from a file
When piping to source-highlight, use the version in $PATH
Use lesspipe.sh for less syntax highlighting

Also, only do this if lesspipe.sh exists in the path.