message: Update requirements because type hints require 3.6
diff: @@ -20,7 +20,12 @@ in the service of the secondary goal above :)
  Getting Started
  ===============
  -This assumes you're using virtualenv, virtualenvwrapper, and Python3.5+. The
  +This assumes you're using
  +
  +- virtualenv
  +- virtualenvwrapper
  +- Python 3.6+
  +
  [hitchhiker's guide to
  python](http://docs.python-guide.org/en/latest/dev/virtualenvs/) has a good
  intro on both of these. The instructions after this point haven't been tested
  