Add routes to map, styled by route_type

This will require the following steps on each vagrant box to work:
```
cd /projects/gtfs-parser
sudo git fetch && sudo git pull
sudo ./sbt publish-local
sudo service oti-geotrellis restart
```

Then, delete your existing gtfs data with deployment/truncate_gtfs.sql
and re-upload.
I only tested this with the SEPTA rail data, here is a screenshot. Yes, I realize the colors are ugly.

![gtfs-colored-routes](https://cloud.githubusercontent.com/assets/1818302/3516289/3b2ef476-06df-11e4-8b77-e31dc47b37a2.png)