Autogenerate md documentation for kubectl

This does away with the giant dump from cobra for kubectl and instead
generates md files which contain similar information, but one per verb.
This might work well as part of the cobra project, instead of doing it
in kube, but this gets us nice, linked, documentation right now.  If
people like it, I will try to get something similar into cobra.

docs/kubectl-expose.md

@@ -0,0 +1,73 @@
+## kubectl expose
+
+Take a replicated application and expose it as Kubernetes Service
+
+### Synopsis
+
+Take a replicated application and expose it as Kubernetes Service.
+		
+Looks up a ReplicationController by name, and uses the selector for that replication controller
+as the selector for a new Service on the specified port.
+
+Examples:
+
+    $ kubectl expose nginx --port=80 --container-port=8000
+    // Creates a service for a replicated nginx, which serves on port 80 and connects to the containers on port 8000.
+
+    $ kubectl expose streamer --port=4100 --protocol=udp --service-name=video-stream
+    // Create a service for a replicated streaming application on port 4100 balancing UDP traffic and named 'video-stream'.
+
+
+kubectl expose <name> --port=<port> [--protocol=TCP|UDP] [--container-port=<number-or-name>] [--service-name=<name>] [--public-ip=<ip>] [--create-external-load-balancer]
+
+### Options
+
+```
+      --container-port="": Name or number for the port on the container that the service should direct traffic to. Optional.
+      --create-external-load-balancer=false: If true, create an external load balancer for this service. Implementation is cloud provider dependent. Default is 'false'.
+      --dry-run=false: If true, only print the object that would be sent, without creating it.
+      --generator="service/v1": The name of the API generator to use.  Default is 'service/v1'.
+      --no-headers=false: When using the default output, don't print headers.
+  -o, --output="": Output format. One of: json|yaml|template|templatefile.
+      --output-version="": Output the formatted object with the given version (default api-version).
+      --overrides="": An inline JSON override for the generated object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field.
+      --port=-1: The port that the service should serve on. Required.
+      --protocol="TCP": The network protocol for the service to be created. Default is 'tcp'.
+      --public-ip="": Name of a public IP address to set for the service. The service will be assigned this IP in addition to its generated service IP.
+      --selector="": A label selector to use for this service. If empty (the default) infer the selector from the replication controller.
+      --service-name="": The name for the newly created service.
+  -t, --template="": Template string or path to template file to use when -o=template or -o=templatefile.
+```
+
+### Options inherrited from parent commands
+
+```
+      --alsologtostderr=false: log to standard error as well as files
+      --api-version="": The API version to use when talking to the server
+  -a, --auth-path="": Path to the auth info file. If missing, prompt the user. Only used if using https.
+      --certificate-authority="": Path to a cert. file for the certificate authority.
+      --client-certificate="": Path to a client key file for TLS.
+      --client-key="": Path to a client key file for TLS.
+      --cluster="": The name of the kubeconfig cluster to use
+      --context="": The name of the kubeconfig context to use
+  -h, --help=false: help for kubectl
+      --insecure-skip-tls-verify=false: If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure.
+      --kubeconfig="": Path to the kubeconfig file to use for CLI requests.
+      --log_backtrace_at=:0: when logging hits line file:N, emit a stack trace
+      --log_dir=: If non-empty, write log files in this directory
+      --log_flush_frequency=5s: Maximum number of seconds between log flushes
+      --logtostderr=true: log to standard error instead of files
+      --match-server-version=false: Require server version to match client version
+      --namespace="": If present, the namespace scope for this CLI request.
+  -s, --server="": The address and port of the Kubernetes API server
+      --stderrthreshold=2: logs at or above this threshold go to stderr
+      --token="": Bearer token for authentication to the API server.
+      --user="": The name of the kubeconfig user to use
+      --v=0: log level for V logs
+      --validate=false: If true, use a schema to validate the input before sending it
+      --vmodule=: comma-separated list of pattern=N settings for file-filtered logging
+```
+
+### SEE ALSO
+* [kubectl](kubectl.md)
+