Add more classifiers

Author: codingjoe

setup.cfg

@@ -10,9 +10,12 @@ classifier =
     Development Status :: 4 - Beta
     Environment :: Console
     Intended Audience :: Developers
+    License :: OSI Approved :: MIT License
     Intended Audience :: Information Technology
     Operating System :: OS Independent
     Programming Language :: Python
+    Topic :: Software Development :: Quality Assurance
+    Topic :: Software Development :: Testing
 keywords =
     linter
     regex