Merge pull request #18 from gauravarora/master

Update README.md steps for manually deploying to heroku

The steps to deploy to heroku referenced a non-existent branch `heroku-integration` which was used while integrating these changes.

README.md

@@ -21,7 +21,7 @@ Or proceed manually as follow:
 * heroku create --stack cedar
 * heroku addons:add heroku-postgresql:dev
 * heroku config:set NODE_ENV=production
-* git push heroku heroku-integration:master
+* git push heroku master
 
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