Release v0.2.0

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
README: removal of bitdeli badge

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
README: pypi badge fix

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
README: new About section and minor wordsmithing

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
docs: section display fix and description update

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
setup: Flask framework addition

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
tox: Python-3.4 addition

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
tests: execute run-tests.sh instead of source

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
version: post-release version bump

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
global: license change to Revised BSD License

* The Flask-SSO extension is now released under more permissive
  Revised BSD License.

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
WIP