#194 Change setup.py to AGPL v3

This is inline with the current LICENSE file and seemingly the intent of 4006bbc.

Author: r24mille

setup.py

@@ -45,12 +45,12 @@ def find_version(*file_paths):
     maintainer='WattTime Corporation',
     maintainer_email='[email protected]',
     url='https://github.com/WattTime/pyiso',
-    license='Apache',
+    license='AGPL v3',
     classifiers=[
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 3',
-        'License :: OSI Approved :: Apache Software License',
+        'License :: OSI Approved :: GNU Affero General Public License v3',
         'Operating System :: OS Independent',
         'Development Status :: 3 - Alpha',
         'Environment :: Web Environment',