[distribution] Migrate to setuptools

Remove support for distutils and add support for setuptools. In addition
list the GitHub repository and remove the Google code repository as the
URL.

setup.py

 # -*- coding: utf-8 -*-
-from distutils.core import setup
+from setuptools import setup, find_packages
 
 setup(name="pymdptoolbox",
       version="0",
       author="Steven A. W. Cordwell",
       author_email="steven.cordwell@uqconnect.edu.au",
-      url="http://code.google.com/p/pymdptoolbox/",
+      url="https://github.com/sawcordwell/pymdptoolbox",
       description="Markov Decision Process (MDP) Toolbox",
       long_description="The MDP toolbox provides classes and functions for "
       "the resolution of descrete-time Markov Decision Processes. The list of "
       "algorithms that have been implemented includes backwards induction, "
       "linear programming, policy iteration, q-learning and value iteration "
       "along with several variations.",
-      download_url="http://code.google.com/p/pymdptoolbox/downloads/list",
+      download_url="https://pypi.python.org/pypi/pymdptoolbox",
       classifiers=[
           "Development Status :: 2 - Pre-Alpha",
           "Environment :: Console",
@@ -26,12 +26,14 @@ setup(name="pymdptoolbox",
           "Programming Language :: Python :: 2.7",
           "Programming Language :: Python :: 3",
           "Programming Language :: Python :: 3.3",
+          "Programming Language :: Python :: 3.4",
           "Topic :: Scientific/Engineering",
           "Topic :: Scientific/Engineering :: Mathematics",
           "Topic :: Software Development :: Libraries :: Python Modules"],
       platforms=["Any"],
       license="New BSD",
-      
-      packages=["mdptoolbox"],
+
+      packages=find_packages("src", exclude=["tests"]),
       package_dir={"": "src"},
-      requires=["math", "numpy", "scipy", "time"],)
+      install_requires=["numpy", "scipy"],
+      extras_require={"LP": "cvxopt"})