Add readme.
Add readme.

spotbugs/spotbugs,johnscancella/spotbugs,spotbugs/spotbugs,KengoTODA/spotbugs,johnscancella/spotbugs,spotbugs/spotbugs,sewe/spotbugs,sewe/spotbugs,sewe/spotbugs,spotbugs/spotbugs,sewe/spotbugs,KengoTODA/spotbugs,johnscancella/spotbugs,KengoTODA/spotbugs,johnscancella/spotbugs,spotbugs/spotbugs,KengoTODA/spotbugs