Allow docstring only classes. Fixes issue 8.
Add tests for class docstrings.
Merge pull request #23 from bboe/docstring_class

Allow docstring only classes. Fixes issue #8.
Minor refactoring
Simplify check-function protocol
Minor improvements to error formatting
Remove unnecessary PEP references
added full path to error messages
Merge pull request #24 from papisz/master

Full path in errors