[readme] Opening Issues against spotbugs or findbugs plugin

[hazendaz]

This plugin is a continuation of findbugs-maven-plugin. We are by default keeping the master in sync with findbugs-maven-plugin at the current time. When opening bugs, please consider if the issue is with the original plugin which has it's own bug tracking here or with spotbugs changes. Every attempt will be made to perform bug fixes against the original plugin as there are known issues yet to be overcome there. Fixes against the original plugin will be merged into this project.

[hazendaz]

Closing as @hazendaz is addressing needs with @gleclaire as needed and there is no reason at this point to impose this upon the community that might be using this plugin versus the older findbugs variation.