re-indent pom.xml
Bump to 0.3.2-SNAPSHOT and automatically build the version into plugin.yml
Remove main.java from all package names.

It isn't necessary and doesn't seem to be the normal convetion, so
IntelliJ complains about it.
Optimize imports
Missed a main.java reference in plugin.yml
Don't use <includes> in pom.xml. Leaving it out lets it include all files.
Merge pull request #4 from AsaAyers/cleanup

General code cleanup