build: add development dependencies to setup script

mattyclarkson · mattyclarkson · commit 5eee7d14ab6a · 2018-10-29T09:34:03.000Z
diff --git a/setup.py b/setup.py
@@ -30,4 +30,11 @@
                    'Topic :: Software Development :: Quality Assurance',
                    'License :: Freely Distributable'],
       description='An automated checker to make sure a C++ file follows Google\'s C++ style guide',
-      long_description=open('README.rst').read())
+      long_description=open('README.rst').read(),
+      extras_require={
+        'dev': [
+            'pylint',
+            'flake8',
+            'yapf',
+        ]
+      })
