Convert data to geojson

Convert data to `.geojson` format so that it can be natively mapped within GitHub. [Rendered View](https://github.com/benbalter/pirateaction2/blob/gh-pages/data/pirateaction.geojson)

![screen shot 2013-07-03 at 2 09 02 pm](https://f.cloud.github.com/assets/282759/745112/a738a3c6-e40b-11e2-8f37-f98989c7c859.png)