Move RVM config from .rvmrc to .ruby-version and .ruby-gemset files
Move project RVM config from .rvmrc to .ruby-version and .ruby-gemset files
Update dotenv-rails gem
Refactor integration.rake and deploy.rake to handle projects with staging and production apps
Merge branch 'remove-rvmrc' into belem-pr
Merge branch 'integration-tasks' into belem-pr

Conflicts:
	CHANGELOG.md
Change to staging_app on heroku app
Some changes
Merge pull request #103 from Helabs/belem-pr

The 2 PRs#97 and #98