CpuStats.CpuUsage includes TotalUsage

Docker-DCO-1.1-Signed-off-by: Bernerd Schaefer <bj.schaefer@gmail.com> (github: bernerdschaefer)
Replacing docker-dev with libcontainer mailing list.

Docker-DCO-1.1-Signed-off-by: Victor Marmol <vmarmol@google.com> (github: vmarmol)
Merge pull request #34 from bernerdschaefer/cgroup-stats-total-cpu-usage

CpuStats.CpuUsage includes TotalUsage
Merge pull request #35 from vmarmol/fixes

Replacing docker-dev with libcontainer mailing list.
Don't fail getting stats of unknown hierarchies.

Docker-DCO-1.1-Signed-off-by: Victor Marmol <vmarmol@google.com> (github: vmarmol)
Merge pull request #37 from vmarmol/allow-not-found

Don't fail getting stats of unknown hierarchies.
Add minimal sample configuration files for testing
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Update main readme with new configs folder
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Fix unit test path
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #38 from crosbymichael/add-specs

Add sample config files
Update readme with API change explination
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Fix typo in sample configs
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Fix nit on wording
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #40 from crosbymichael/api-readme

Update readme with API change explination