Publish Maven artifact to "Public" repository

Add LICENSE and NOTICE.template as prescribed by
https://wiki.doit.wisc.edu/confluence/display/ST/License+and+Notice+Requirements
Configure the license plugin to check the dist folder
Change the license-plugin to only scan the 'destDir' property...

...which is where the original release zip is unpacked. Since these
files already have license comments, no changes are needed.
Add generated NOTICE file

A NOTICE file is required for artifacts published in UW's public
artifact repository.
Merge pull request #54 from nblair/publish-to-public-repository

Publish to public repository