Use ASL licensed findbugs jar, not LGPL

[dsmiley]

I strongly suggest you not use an LGPL licensed JAR unnecessarily, use this:
https://github.com/stephenc/findbugs-annotations
http://search.maven.org/#artifactdetails%7Ccom.github.stephenc.findbugs%7Cfindbugs-annotations%7C1.0-1%7Cjar