More intelligent arguments (can now be properties)

Updated the logic to accomodate property arguments (vs simple literals).
Refactored the code to introduce a new helper: `parseProperty`.
Merge pull request #62 from tbranyen/attr-passing

More intelligent arguments (can now be properties)
Add in correct Sauce credentials

I had erroneously added back the wrong account information, so this
commit fixes that.  This also includes the correct badge.  Finally, I
removed the 0.8 test target.