Merge branch 'release/0.6.1'

* release/0.6.1:
  Update Version Number
  Configured Gradle for publishing artifacts to MavenCentral
  Added Apache license file
  Code cleanup to improve GroovyDoc output
  Added Gradle wrapper and Gradle Signing plugin
Combined MessageServiceClient and MessageServiceTool into one project
Update README.md
Fix class name
Merge branch 'release/0.6.1.1'

* release/0.6.1.1:
  Fix class name
  Update README.md
  Combined MessageServiceClient and MessageServiceTool into one project
Merge branch 'master' of https://github.com/USF-IT/MessageServiceClient

* 'master' of https://github.com/USF-IT/MessageServiceClient: