add ez_setup module to setup.py

Author: toddtreece

setup.py

@@ -20,6 +20,7 @@
  author = 'Justin Cooper',
  author_email = 'justin@adafruit.com',
  packages = ['Adafruit_IO'],
+ py_modules = ['ez_setup'],
  url = 'https://github.com/adafruit/io-client-python',
  license = 'MIT',
  keywords = 'Adafruit IO',