Merge pull request #13 from heiko-braun/master

Fix #6 and #4
Merge pull request #14 from heiko-braun/master

Some words on how to install rhq metrics
Use the published version of the clients-common jar
added logger
update to build to generate the logger implementations
Merge pull request #15 from heiko-braun/logging

Added subsystem loggers
Point to wiki pages