Switches CitiBikeNYC job to use NYC-specific latlong.

A step towards multi-tenancy.

Add the following environment variables for NYC latlong:

NYC_LATITUDE: 40.740151
NYC_LONGITUDE: -73.9948
Merge pull request #1 from spilth/nyc_latlong_citibike

Switches CitiBikeNYC job to use NYC-specific latlong.