Set IN_FORM_CONTEXT_VAR as part of extra_context.

Fixes #73.
Added test case.
Merge remote-tracking branch 'melinath/patch-1' into melinath-patch-1
Updating links to point to new repo url https://github.com/gregmuellegger/django-floppyforms
Django-floppyforms -> django-floppyforms.
Changing test script to be python based runtests.py instead of a Makefile.
The benefit is that you can specify arbitrary testcase names as arguments.
Using python only and no subprocess to execute tests. That should fix TravisCI builds.
Moving test files outside of the floppyforms package.
Adding requirements file to dependencies in tox.ini
Taking care of DeprecationWarning regarding the renaming of django.forms.util -> django.forms.utils.
Adding --no-coverage argument to runtests.py
Speeding up testsuite setting FilePathField(path='...') to the tests directory.
Fixes #88 -- attrs.html shouldn't skip the attributes value if it's 1.
Adding a CHANGES.rst file.
Fixes #75 -- Adding documentation about the  HTML attribute.
Adding the CHANGES.rst to the long_description that gets submitted to PyPI.
Argh. Fixing setup.py - I called the read() function in a wrong way.
Adding CHANGES.rst to MANIFEST.in file.