Add examples for kubectl describe, and make gendocs less spammy

Makes hack/{run/verify}-gendocs.sh ignore generated-timestamp-only
changes so minor changes to kubectl don't have to touch the entire
set of md docs.

docs/kubectl_describe.md

@@ -11,7 +11,17 @@ This command joins many API calls together to form a detailed description of a
 given resource.
 
 ```
-kubectl describe RESOURCE ID
+kubectl describe (RESOURCE NAME | RESOURCE/NAME)
+```
+
+### Examples
+
+```
+// Describe a node
+$ kubectl describe nodes kubernetes-minion-emt8.c.myproject.internal
+
+// Describe a pod
+$ kubectl describe pods/nginx
 ```
 
 ### Options
@@ -53,4 +63,4 @@ kubectl describe RESOURCE ID
 ### SEE ALSO
 * [kubectl](kubectl.md)	 - kubectl controls the Kubernetes cluster manager
 
-###### Auto generated by spf13/cobra at 2015-04-23 00:47:55.40003297 +0000 UTC
+###### Auto generated by spf13/cobra at 2015-04-23 21:21:05.485819349 +0000 UTC

docs/man/man1/kubectl-describe.1

@@ -128,6 +128,21 @@ given resource.
     comma\-separated list of pattern=N settings for file\-filtered logging
 
 
+.SH EXAMPLE
+.PP
+.RS
+
+.nf
+// Describe a node
+$ kubectl describe nodes kubernetes\-minion\-emt8.c.myproject.internal
+
+// Describe a pod
+$ kubectl describe pods/nginx
+
+.fi
+.RE
+
+
 .SH SEE ALSO
 .PP
 \fBkubectl(1)\fP,