Add a PodCache that is responsible for caching pod information.
Not wired in yet.
Merge pull request #162 from brendandburns/poll

Add a PodCache that is responsible for caching pod information.
On delete, also attempt to update controller state, in case we
missed a previous update.  Add a test to validate that this works
Merge pull request #165 from brendandburns/replicas

On delete, also attempt to update controller state
Wire in the pod cache.  Just used for List for now.
Add location of where to get the gcloud tools to README.md
Merge pull request #43 from drewcsillag/master

Add location of where to get the gcloud tools.
Merge pull request #171 from brendandburns/poll

Wire in the pod cache.  Just used for List for now.
Add cAdvisor into third_party
add /containerStats
GOPATH...
testify
unit test for cadvisor
more unit test for GetContainerStats()
more unit test
unit test for GetContainerStats()