amend .gitconfig spacing
add unapply to .gitconfig

Use this when you apply a stash, do some work, and then want to
unapply that stash again.

    $ git stash apply
    $ #... make changes
    $ git stash unapply

[source](http://git-scm.com/book/en/Git-Tools-Stashing#Un-applying-a-Stash)