enable the use of specific TimeUnits for individual metric durations and rate units
Add optional name prefix to GangliaReporter.

Closes #400.
Merge pull request #402 from fernandezpablo85/master

Specific rate and duration units for JmxReporter
Clean up JmxReporter a little.
Update contributors list.
Fix underline in servlets docs.
[maven-release-plugin] prepare release v3.0.0-RC1
[maven-release-plugin] prepare for next development iteration
Update docs.
Update contributors.rst

Though I like to stand out, this seems a bit too much :P
Merge pull request #410 from fernandezpablo85/patch-1

Contributors list bug