Add Thomas adlibs to GitIntro test.

Used in presentation as demo/exercise.
Ad Thomas to GitIntro.chpl
Now Thomas is ecstatic.
Merge pull request #1 from thomasvandoren/add-thomas-to-git

Adlib for thomas

This is from the pull request!
Adding Tim to the addlib
merging...
merging chapel-lang
merging
fixing for merge
Merge pull request #5 from tzakian/add-tim

Add tim