Adds try catch import of setuptools usage

Try except import allows for the usage of setuptools if available but
does not require them in order to run. The fallback is on the distutils
package that comes with Python standard.

Author: avelis

setup.py

@@ -1,4 +1,7 @@
-from distutils.core import setup # setuptools breaks
+try:
+    from setuptools import setup
+except ImportError:
+    from distutils.core import setup  # if setuptools breaks
 
 # Dynamically calculate the version
 version_tuple = __import__('rest_hooks').VERSION