Added Brooklyn data.

Other boroughs to come! Let me know how this looks.

The holes are parks, cemeteries, airports, etc.
![Screen Shot 2013-02-10 at 8 31 26 PM](https://f.cloud.github.com/assets/173440/144064/c7c6c366-73ea-11e2-96d8-d779f4679598.png)