Add collision data to map

* Get data from SODA API using HTTParty
* Clean data and enter into database
* Add markers representing data to map using MapBoxJS
* Move map directly into home show page
* Improve use of MapBox gem
I don't really understand how the Home model has anything to do with data.  It seems like the data collector is something that shouldn't be run everytime the page runs, but instead should run on a schedule of some sort. 

Then I would say you would be able to get all the Incidents with `Incident.all` and remove that functionality.

Take a look at Delayed job. consider this as a possibility for later. maybe next. This is fine for now.
https://github.com/collectiveidea/delayed_job