add setup.py to linter check

Author: felixdivo

.travis.yml

@@ -84,6 +84,7 @@ jobs:
         # warnings to the .pylintrc-wip file to prevent them from being
         # re-introduced
         - pylint --rcfile=.pylintrc-wip can/
+        - pylint --rcfile=.pylintrc setup.py
         # mypy checking
         - mypy
           --python-version=3.7

setup.py

@@ -5,6 +5,8 @@
 python-can requires the setuptools package to be installed.
 """
 
+# pylint: disable=invalid-name
+
 from __future__ import absolute_import
 
 from os import listdir