fix(compat): support python 3.4

also, use list for classifiers
task(travis): add python version 3.3 and 3.4
fix(travis): test django 1.5, 1.6 and 1.7 and add exclusions to matrix

also add python 3.2 (supported in django 1.5 and up)
tests: support python 3 in tests
tests: remove djcelery from test and test_project_py3.settings
fix(travis): don't test python 3.2 (too many workarounds required)
chore(README): update supported python/django versions
Merge pull request #2 from asfaltboy/fix-py3-tests

Fix py2/3 tests and better support python 3