Add setup files

Minimal setup files which should allow installation as a package and
generation of wheel files.

Note that there is currently no version number.

setup.cfg

@@ -0,0 +1,7 @@
+[bdist_wheel]
+universal=1
+
+[build_sphinx]
+source-dir = docs
+build-dir  = docs/build
+all_files  = 1

setup.py

@@ -0,0 +1,6 @@
+from setuptools import setup, find_packages
+
+setup(name='Mastodon.py',
+      description='Python wrapper for the Mastodon API',
+      packages=['mastodon'],
+      install_requires=['requests'])