Fix python 3 pip install issue with ez_setup relative import.

Author: tdicola

setup.py

@@ -1,5 +1,11 @@
-from ez_setup import use_setuptools
-use_setuptools()
+try:
+    # Try using ez_setup to install setuptools if not already installed.
+    from ez_setup import use_setuptools
+    use_setuptools()
+except ImportError:
+    # Ignore import error and assume Python 3 which already has setuptools.
+    pass
+
 from setuptools import setup, find_packages
 
 import sys
@@ -11,7 +17,7 @@
     requires.append('spidev')
 
 setup(name              = 'Adafruit_GPIO',
-      version           = '1.0.0',
+      version           = '1.0.1',
       author            = 'Tony DiCola',
       author_email      = 'tdicola@adafruit.com',
       description       = 'Library to provide a cross-platform GPIO interface on the Raspberry Pi and Beaglebone Black using the RPi.GPIO and Adafruit_BBIO libraries.',