Travis CI Integration

This pull request adds Travis CI testing for awesomebits. Once we get our tests running we'll be able to see (in our readme) the current status of the build and (in our pull requests) whether the new code passes all our tests.

To set this up, go to http://travis-ci.org, then navigate to Profile (http://travis-ci.org/profile/). Enable CI for awesomebits (Travis will take care of the webhook configuration). I'm not sure if you'll be able to see the status for this PR (since it was submitted before CI was enabled), but once it's merged you'll get the status image in the readme.

![screen shot 2014-09-07 at 12 31 46](https://cloud.githubusercontent.com/assets/48325/4178889/7bc4624e-36ac-11e4-8d47-4a2881546eee.png)
(NB from another project, since ours isn't set up)