Adding github repo metrics.
Renaming plugin.
Defaulting to walking all org repos.
Initial commit of cgroup metric plugin
Paths passed in with -p flag are now turned into dot notation in the path. If using root (no -p provided), it is omitted
Cleaned up echo statements. Cleaned up header
Merge pull request #306 from jprokay/master

Cgroup metrics plugin
Merge pull request #300 from nstielau/github_metrics

Adding github repo metrics.