Updated project URL.
new: Added tox.ini for testing of python3-ported code (only!)
chg: added doctest discovery to tox.ini commands
fix: recently changed files now pep8 compliant
fix: fixed assert statement in rest test case
chg: merged feature/google-search into develop: contained only change of eWRT's url
merging develop into feature/bing_google_search
chg: Added __init__.py to bing directory, making it a package to python
chg: added test-run command for bing search to tox.ini
chg: added lxml dependency to tox and nosetest command for google custom search. That fails right now due to __init__/python 3 problem