Extract the setup.py software version from the source code, and update PKG-INFO.

Author: tshead2

setup.py

@@ -3,6 +3,8 @@
 # rights in this software.
 
 from setuptools import setup, find_packages
+import re
+
 setup(
   name = "toyplot",
   classifiers = [
@@ -15,17 +17,20 @@
     "License :: OSI Approved :: BSD License",
     "Natural Language :: English",
     "Programming Language :: Python :: 2",
+    "Programming Language :: Python :: 3",
     "Topic :: Scientific/Engineering :: Visualization",
     ],
   description = "A modern plotting toolkit supporting electronic publishing and reproducibility.",
   install_requires = ["numpy>=1.7", "colormath"],
   long_description = """Toyplot is the kid-sized plotting toolkit for Python with grownup-sized goals:
   * Develop beautiful interactive, animated plots that embrace the unique capabilities of electronic publishing and support repoducibility.
   * Create the best possible data graphics "out-of-the-box", maximizing data ink and minimizing chartjunk.
-  * Provide a clean, minimalist interface that scientists and engineers will love.""",
+  * Provide a clean, minimalist interface that scientists and engineers will love.
+
+  See the Toyplot documentation at http://toyplot.readthedocs.org, and the Toyplot sources at http://github.com/sandialabs/toyplot""",
   maintainer = "Timothy M. Shead",
   maintainer_email = "[email protected]",
-  url = "http://github.com/sandialabs/toyplot",
-  version = "0.1.0",
+  url = "http://toyplot.readthedocs.org",
+  version = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]", open("toyplot/__init__.py", "r").read(), re.M).group(1),
   packages = find_packages(),
 )