enabled CORS

[max-mapper]

http://enable-cors.org/

I looked at the code and it didn't seem to have CORS headers support yet

Cheers!

Max

[benbalter]

GET CORS support would be a great addition. No plans to add this right now, but would gladly merge a pull request.

In the mean time, since it's a GET only system, most implementations should be able to use JSONP to get around CORS restrictions.