Add a README file so that cvs update -P doesn't obliterate this directory, and so that people have a clue as to why it exists.
Add a README file so that cvs update -P doesn't obliterate this
directory, and so that people have a clue as to why it exists.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator