Build project list using travis

Please check the script as run above to ensure it does what you expect. Above should be easy enough to understand, if not please let me know.

You'll need to encrypt to env variables:
- Ohloh API key. Save this as env variable OHLOH_KEY
- Githuh access token. Save this as env variable GH_TOKEN

See here for instructions: http://docs.travis-ci.com/user/encryption-keys/. Add details in the 'secure' part (you can add multiple if you wish to separate out details).

Once you are done you'll need to switch on travis testing for this repo (settings -> hooks -> etc).

It will also test pull requests but won't deploy these. It will only go as far as saying yes/no based on the exit code of your python script.