adding underscore.js to vendor folder
adding require underscore to application.js
Creating a js module to handle heat map data from view
adding script to pass heatmap_data to js module
playing around with users helper for heatmap data
adding get_heatmap_data method to controller
Merge branch 'ajaxLatLong'

Conflicts:
	app/controllers/updates_controller.rb
removing typo in updates_controller