Updated documentation to reflect proper heroku steps
Updated documentation again

to reflect env variables for heroku, and steps to remove config lines from production.js
Updated documentation again

this time to not include the invalid env variable for IP, and also to not include the production.js bit as its not uncommented by default.
updated documentation for heroku, merged from mde/geddy with latest updates
Merge pull request #311 from RelativeMedia/master

More updates to Deployment documentation