Add files for pipenv support

Pipenv is a new way to do Python virtual environments. I created the
virtual environment here using:

  $ pipenv --two
  $ pipenv install ansible ansible-lint

To use the virtual environment you enter the project directory and
type:

  $ pipenv shell

See: https://github.com/pypa/pipenv

Pipfile

@@ -0,0 +1,20 @@
+[[source]]
+
+url = "https://pypi.python.org/simple"
+verify_ssl = true
+name = "pypi"
+
+
+[packages]
+
+ansible = "*"
+ansible-lint = "*"
+
+
+[dev-packages]
+
+
+
+[requires]
+
+python_version = "2.7"