Add testdata to distribution package so third parties can run the tests
Optional css_class passed as args to the avatar tag.

If no class is passed, no class is added.
2.0a2-eldarion
Merge pull request #2 from ssouk/accepting_css_class_in_avatar_tag

Optional css_class passed as args to the avatar tag.
Merge pull request #1 from ingenieroariel/testdata

Add testdata to distribution package so third parties can run the tests