[maven-release-plugin] prepare for next development iteration
add remaining docker version fields
Merge pull request #7 from spotify/dano/version2

add remaining docker version fields
Added removeImage call
Merge pull request #6 from spotify/rculbertson/remove-image

Added removeImage call
Added ability to tag images
Merge pull request #5 from spotify/rculbertson/tag-and-rmi

Added ability to tag images
prepare for version 2.2.0
[maven-release-plugin] prepare release 2.2.0