Update .travis.yml
Added provider: OpsWorks
Merge pull request #75 from johanneswuerbach/opsworks

Added provider: OpsWorks
Support for migrations and deploy tested sha
Merge pull request #77 from johanneswuerbach/enhanced-opsworks

Support for migrations and deploy tested sha
Updated PyPI documentation

[ci skip]
change HEAD:master to HEAD:refs/heads/master in heroku git strategy
Merge branch 'master' of https://github.com/travis-ci/dpl
bump version
Fixed typo
Updated PyPI documentation
Install 'wheel' package if bdist_wheel is specified
Merge pull request #79 from Aaron1011/wheel

Install 'wheel' package if bdist_wheel is specified
Added gem version badge
Merge branch 'master' of https://github.com/travis-ci/dpl
bump version