Flatten ContainerStats struct
Add more detailed running instructions.

Fixes #290
Merge pull request #292 from vmarmol/readme

Add more detailed running instructions.
Merge pull request #277 from vmarmol/flat

Flatten ContainerStats struct
Add more detailed build docs.
Merge pull request #295 from vmarmol/readme

Add more detailed build docs.
Add a StatsBuffer circular buffer for ContainerStats.
Reorganizing cAdvisor docs and moving many of them to their own pages.
Merge pull request #298 from vmarmol/readme

Reorganizing cAdvisor docs and moving many of them to their own pages.
Merge pull request #231 from vmarmol/circular-buffer

Add a StatsBuffer circular buffer for ContainerStats.
Merge pull request #296 from vmarmol/docker

Add /docker/ UI endpoint.
Simplify how the Docker containers are handled.

This is done by introducting the concept of "namespaces" of container
names. The aliases of a container are under this namespace. Namespace
names are of the form:

//<namespace>/<alias>

This allows us to (within cAdvisor) query all docker containers as
//docker regardless of whether this is a systemd or a non-systemd system.

This does break our ability to handle Docker aliases with the /container
endpoint. I think this is acceptable as our support there was not
consistent between system types.