Added separate integration tests for skipping the plugin using a system property or plugin configuration. Added a test for AbstractDockerMojoTest for the skip option.
Updated documentation for the skip option.
Merge branch 'lcoote-master'
Added contributor (thanks Lachlan Coote!)
Added apache license headers to all sources.
[maven-release-plugin] prepare release release/1.2
[maven-release-plugin] prepare for next development iteration
Update README.md