module: convert to use Pipfile

Pipfile

@@ -0,0 +1,14 @@
+[[source]]
+url = 'https://pypi.python.org/simple'
+
+[requires]
+python_version = '2.7'
+
+[packages]
+smbus2 = '*'
+
+[dev-packages]
+mock = '*'
+pylint = '< 2'
+pytest = '< 5'
+snapshottest = '*'