Fix for issue #74 - change to graph.js
Fix for issue #74 - change to graph.js

- Moved the $.ajax call into a function expression called 'loadGraph'
- Bound .load() to the #graph element and passed it loadGraph, so the ajax call only happens when the element is loaded.

codeforboston/cambridge_energy_app,codeforboston/cambridge_energy_app,codeforboston/cambridge_energy_app