Implemented cleanup for `get_git_branch` and `parse_git_dirty`
Corrected missing 2> /dev/null and more code cleanup
Updated notes for `git` dirty
Cleaning up ahead/behind parsing
Moving onto exit codes, quoting subshells, and code cleanup
Adding a patch to `is_on_git` to support new version if `git branch`
Updated test for new is_on_git format
Changing syntax style of `if`
Merge branch 'dev/reddit.code.review' into dev/add.travis