Registering license subextension
Configuring Placeholders
Added license files
Merge branch 'master' into license

Conflicts:
	gs-license/gradle.properties
	gs-license/src/main/groovy/com/gersis_software/gradle/license/GSLicensePlugin.groovy
	gs-license/src/test/groovy/com/gersis_software/gradle/license/GSLicensePluginSpec.groovy
Additional fix after merge