Change to AutoPlugin
Update examples
Merge branch 'master' into auto-plugin
Set version to 0.6.0-SNAPSHOT
Rename Docker to DockerPlugin
Use normalized name for default image name
Merge branch 'master' into auto-plugin

Conflicts:
	build.sbt
	src/main/scala/sbtdocker/Plugin.scala
Merge branch 'master' into auto-plugin

Conflicts:
	build.sbt
	src/main/scala/sbtdocker/Plugin.scala
Merge branch 'auto-plugin'

Conflicts:
	build.sbt
	src/main/scala/sbtdocker/Plugin.scala
	src/sbt-test/sbt-docker/expand-archive/build.sbt
	src/sbt-test/sbt-docker/simple/build.sbt
Use busybox instead of ubuntu as base image
Remove type parameter from DockerfileLike
Update documentation