add note about what happened to Python 1.6 also, fix type (not caught by Rob Hooft, but could have been :-)
add note about what happened to Python 1.6
also, fix type (not caught by Rob Hooft, but could have been :-)

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