Release 0.3.1

The previous upload to pypi was wrong, but it doesn't let you replace previous versions. So I'm bumping the version to allow a new release.

Author: raymondbutcher

setup.py

@@ -4,7 +4,7 @@
 
 setup(
     name='terrafile',
-    version='0.3.0',
+    version='0.3.1',
     description='Manages external Terraform modules.',
     author='Raymond Butcher',
     author_email='ray.butcher@claranet.uk',