Update treemenus/templatetags/tree_menu_tags.py

Fix error on Django 1.5 because of deprecated template tag syntax since Django 1.3.
Updated Django versions for Travis CI.
Merge pull request #18 from reavis/master

Update setup.py to include static image assets
Update tree_menu_tags.py

Fix formatting of the url tag to support both django 1.2- and 1.3+
Merge pull request #20 from artscoop/master

Fix reverse_named_url broken in Django 1.5
Small string formatting tweak.
Added fake url so tests pass on Django 1.5.
Added another fake url.
Tweaked Travis conf.
Removed Django 1.0.4 from Travis conf.

It is not officially hosted on PyPI anymore.