removed guava dependency due to conflict with android plugin and placed plugin signing config into if block to build without sonatype credentials.
removed usage of plexus utils in base due to unresolvable transitive dependency when using gradle plugin
extracted open source license String into public method, added OpenSourceTextView with just the acknowledgment dialog content, upgraded android build tools version, included library in module settings
Merge pull request #4 from ramseyboy/master

fixed incompatibility with android gradle plugin, upped the android build tools version and added OpenSourceTextView