Add LICENSE file for apache v2.0
Remove plugin properties files that have been moved to other plugins
Update dependencies
Merge pull request #14 from rspieldenner/gradle-1.12

Gradle 1.12
[Gradle Release Plugin] - pre tag commit:  '1.12.4'.
[Gradle Release Plugin] - new version commit:  '1.12.5-SNAPSHOT'.
Fix missing import
Merge pull request #15 from rspieldenner/gradle-1.12

Fix missing import