Adding AGPL3 license per #5
Adding AGPL3 license per #5

Apparently this module was yet-to-be-licensed. This completes the
pending switch, and all derivations thus forth must be under the new
license. Any accepted contributions must also fall under the new license
if merged into master after this commit.

andschwa/puppet-ghost,voxpupuli/puppet-ghost,rmacduff/puppet-ghost,sghill/puppet-ghost,sghill/puppet-ghost,andschwa/puppet-ghost,voxpupuli/puppet-ghost,rmacduff/puppet-ghost