Added a command that needs to be run to get the LibGit2Sharp repository properly
Merge pull request #696 from Kantis/improved-readme

Missing command in readme
Add a temporary stash utility that will wrap operations in `git stah` `git stash pop`
Add --auto-stash option rcheckin

If the working copy is dirty, this flag will allow rcheckin to automatically
`git stash` and `git stash pop` before and after the rcheckin process
Add support for git-tfs.rcheckin-autostash in the config