Add method has_submenu_selected
Update __init__.py

Looks like its looking in `menu_module = '%s.menus' % app` not menu.py
Fixes #8
Added a look up for all `.py `files and added django 1.3 as a required dependency.
This fixes the problem that templatetags is not included when running:
```bash
pip install https://github.com/<username>/django-simple-menu/archive/master.zip#egg=django-simple-menu
```
Merge branch 'master' of https://github.com/boekkooi/django-simple-menu
Merge github.com:diegotoral/django-simple-menu
Merge branch 'patch-1' of github.com:tomleo/django-simple-menu
bump version number to 2.0.7