Merge pull request #1157 from rajasec/readme-containerstate

Updating container state and status API in README

Author: crosbymichael

libcontainer/README.md

@@ -223,6 +223,12 @@ container.Signal(signal)
 
 // update container resource constraints.
 container.Set(config)
+
+// get current status of the container.
+status, err := container.Status()
+
+// get current container's state information.
+state, err := container.State()
 ```