Merge branch 'master' of https://github.com/kubernetes/kubernetes.github.io into release-1.6

* 'master' of https://github.com/kubernetes/kubernetes.github.io: (136 commits)
  Clarify minimum version of kubernetes supporting PSP authz
  Fix typo: federation-controller-mananger => federation-controller-manager
  Fix typo: federation-controller-mananger => federation-controller-manager
  fix command kubectl get svc,pod output
  limitrange-update
  doc-walkthrough-content
  package apt-transport-https should be installed
  Fix apimachinery vendored dependencies in examples_test.
  Delete the parameter "--google-json-key string"
  Removed Extra space in the KUBE2GO commit
  Added KUBE2GO.io
  fix some wrong links
  Update hello-minikube.md
  show kubectl_rollingupdate svg
  Fixed flag for eviction-soft.
  Update review-issues.md
  Move Guide topic: Garbage Collection. (#2488)
  Update source-ip.md
  Update source-ip.md
  concepts/abstractions: init containers example.
  ...

docs/admin/federation-controller-manager.md

@@ -1,5 +1,5 @@
 ---
-title: federation-controller-mananger
+title: federation-controller-manager
 notitle: true
 ---
 

docs/admin/kube-proxy.md

@@ -41,7 +41,6 @@ DynamicKubeletConfig=true|false (ALPHA - default=false)
 DynamicVolumeProvisioning=true|false (ALPHA - default=true)
 ExperimentalHostUserNamespaceDefaulting=true|false (ALPHA - default=false)
 StreamingProxyRedirects=true|false (ALPHA - default=false)
-      --google-json-key string                       The Google Cloud Platform Service Account JSON Key to use for authentication.
       --healthz-bind-address ip                      The IP address for the health check server to serve on, defaulting to 127.0.0.1 (set to 0.0.0.0 for all interfaces) (default 127.0.0.1)
       --healthz-port int32                           The port to bind the health check server. Use 0 to disable. (default 10249)
       --hostname-override string                     If non-empty, will use this string as identification instead of the actual hostname.

docs/admin/limitrange/index.md

@@ -24,7 +24,7 @@ each namespace.
 3. Users may create a pod which consumes resources just below the capacity of a machine.  The left over space
 may be too small to be useful, but big enough for the waste to be costly over the entire cluster.  As a result,
 the cluster operator may want to set limits that a pod must consume at least 20% of the memory and CPU of their
-average node size in order to provide for more uniform scheduling and to limit waste.
+average node size in order to provide for more uniform scheduling and limit waste.
 
 This example demonstrates how limits can be applied to a Kubernetes [namespace](/docs/admin/namespaces/walkthrough/) to control
 min/max resource limits per pod.  In addition, this example demonstrates how you can

docs/admin/namespaces/walkthrough.md

@@ -145,7 +145,7 @@ dev
 
 At this point, all requests we make to the Kubernetes cluster from the command line are scoped to the development namespace.
 
-Let's create some content.
+Let's create some contents.
 
 ```shell
 $ kubectl run snowflake --image=kubernetes/serve_hostname --replicas=2