Initial add of AbstractFileSystem and GitCommands. I broke up the code base with an abstract super class and a two subclasses
Merge branch 'master' of https://github.com/CSC495-2014/TeamworkEnglewoodGit
Reverted back to two classes instead of three.
Successfully implemented the following classes: AbstractFileSystem, FileSystem, and GitCommands. I also fixed some commenting to mirrr PHP doc
Merge branch 'master' of https://github.com/CSC495-2014/TeamworkEnglewoodGit

Conflicts:
	app/models/FileSystem.php
Fixed merge conflict
Fixed merge conflict
Removed includes and fixed typo
Commented out tests
Merge pull request #74 from ZAM-/master

Git commands for file system & more!