Set up Location schema & controller

Add geocoder gem, set up routes
Add location_id to Musicians & Bands
Remove index, auto log-in new user on sign up
Add marker assets for google maps
Build out basic locations controller
Add associations between Musicians & Locations

Add ability for musicians to add, edit and destroy locations
Add JS and CSS for location forms
Incorporated logical flow between Musician & Locations
Ensure uniqueness of Locations - no duplicates created

Add gems: pry-rails, better-errors, binding_of-caller and grouped gems by development & test
Edit routes
Merge pull request #4 from modernlegend/add_locations

Set up Location schema & controller