Add staging environment
Add Heroku dpeloy app for Travis
Merge pull request #27 from eMergence-by-Design/feature/add-staging-environment

Feature/add staging environment
Add api_key for development branch

Conflicts:
	.travis.yml
Merge branch 'develop' of github.com:eMergence-by-Design/social-emergence into develop

Conflicts:
	.travis.yml
*lame* Removed trailing quote
Using same account, so same key should be OK
Update heroku api_key
Use production gems for staging as well