Merge pull request #1 from dylanclement/add-to-heroku

Add to heroku
Deploy to a live site and update the readme.
 - Add Procfile.
 - Set version of node in package.json.
 - Set version of npm in package.json.
 - Fix for neo4j heroku issue.
 - Fix for neo4j heroku issue.
 - Fix package.json versions.
 - Add coffee-script as dependancy instead of dev-dependancy.
 - Read neo4j connection from environment setting.
 - Read neo4j connection from environment setting.
 - Update readme file.
Merge in master.