consistent quotes in setup.py

setup.py

@@ -4,9 +4,9 @@
 setup(
     name='django-object-actions',
     version='0.6.0',
-    author="Chris Chang",
+    author='Chris Chang',
     author_email='[email protected]',
-    url="https://github.com/crccheck/django-object-actions",
+    url='https://github.com/crccheck/django-object-actions',
     packages=[
         'django_object_actions',
     ],
@@ -16,11 +16,11 @@
     long_description=open('README.rst').read(),
     classifiers=[
         'Development Status :: 4 - Beta',
-        "Framework :: Django",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: Apache Software License",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python :: 2",
+        'Framework :: Django',
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: Apache Software License',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',