Update `README.rst`, mention compatibility issues

This package only works with the very latest versions of Django, which
at the moment is the alpha/beta 1.7 branches.
Travis can now run tests on version 3.4 of Python
Require at least the latest Django release (1.6.5).
Add language classifiers to `setup.py`
Fix code indentation and syntax highlighting in `README.rst`
Update `README.rst`

Add the following badges:
    + Test Coverage
    + PyPi Version
    + Wheel Status
    + License Version
Rename `LICENCE` to `LICENSE.txt`
Bump version to `1.1`