Extensive & Accurate Team Information

There is [interest](https://github.com/badges/shields/issues/289) in me providing badges for bountysource. However, there seems to be no way to connect the name of a team to its last fundraiser amount, to the number and amount of open bounties, etc.

There is, however, indication that some APIs are secretly supported, such as [`/teams/`](https://github.com/badges/shields/issues/289#issuecomment-60718433). However, the information provided is wrong. For instance, mozilla-core currently has 2 bounties open for a total of $2000, but the information given from `curl 'https://api.bountysource.com/teams/mozilla-core' -H 'Accept: application/vnd.bountysource+json; version=2'` gives `"open_bounties_amount": 0.0`.