Fixed #12 pip 1.1 install error
Merge branch 'hotfix/pip-install-error'
Merge branch 'hotfix/pip-install-error' into develop
update HISTORY
Merge branch 'master' into develop
python setup.py test support Fixes #13
Travis CI with setup.py test
fix README
Merge pull request #14 from vinta/feature/setup-py-test

feature/setup-py-test
Merge branch 'master' into develop
add util functions: is_url() and normalize_url()
add background_finder
refactoring
improve is_url()