Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/cmd/mungedocs/README.md

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+# Documentation Mungers
+
+Basically this is like lint/gofmt for md docs.
+
+It basically does the following:
+- iterate over all files in the given doc root.
+- for each file split it into a slice (mungeLines) of lines (mungeLine)
+- a mungeline has metadata about each line typically determined by a 'fast' regex.
+  - metadata contains things like 'is inside a preformatted block'
+  - contains a markdown header
+  - has a link to another file
+  - etc..
+  - if you have a really slow regex with a lot of backtracking you might want to write a fast one to limit how often you run the slow one.
+- each munger is then called in turn
+  - they are given the mungeLines
+  - they create an entirely new set of mungeLines with their modifications
+  - the new set is returned
+- the new set is then fed into the next munger.
+- in the end we might commit the end mungeLines to the file or not (--verify)
+
+
+[![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/cmd/mungedocs/README.md?pixel)]()