Update setup.py, update classifiers, support Django 1.8-1.10 and python 3.

Fixes #5

setup.py

@@ -1,22 +1,56 @@
+import codecs
 import os
+import sys
 from setuptools import setup
 
+version = '0.1.0'
 
-with open(os.path.join(os.path.dirname(__file__), 'README.rst')) as readme:
-    README = readme.read()
+
+if sys.argv[-1] == 'publish':
+    os.system('python setup.py sdist upload')
+    os.system('python setup.py bdist_wheel upload')
+    print('You probably want to also tag the version now:')
+    print('  git tag -a %s -m "version %s"' % (version, version))
+    print('  git push --tags')
+    sys.exit()
+
+
+def read(*parts):
+    filename = os.path.join(os.path.dirname(__file__), *parts)
+    with codecs.open(filename, encoding='utf-8') as fp:
+        return fp.read()
+
+
+install_requires = [
+    'Django>=1.6,<1.11',
+    'celery>=3.0,<4.0',
+]
+
+
+test_requires = [
+    'coverage',
+    'flake8',
+    'mock',
+]
 
 
 setup(
     name='django-post-request-task',
-    version='0.0.3',
-    description='A celery task class whose execution is delayed until after '
-                'the request finishes',
+    version=version,
+    description=(
+        'A celery task class whose execution is delayed until after '
+        'the request finishes'
+    ),
     author='Mathieu Pillard',
     author_email='mpillard@mozilla.com',
     url='http://github.com/mozilla/django-post-request-task',
     license='MIT',
-    long_description=README,
+    long_description=read('README.rst'),
     packages=['post_request_task'],
+    install_requires=install_requires,
+    extras_require={
+        'tests': test_requires,
+    },
     include_package_data=True,
     zip_safe=False,
     classifiers=[
@@ -28,6 +62,14 @@ setup(
         'License :: OSI Approved :: BSD License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: Implementation :: PyPy',
+        'Programming Language :: Python :: Implementation :: CPython',
         'Topic :: Software Development :: Libraries :: Python Modules',
     ]
 )