docs: general improvements

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
tests: grunt-cli addition

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>
tox: addition of Python-3.4

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: new About section and capitalisation fixes

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
setuptools-bower v0.2.0

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

* Executes run-coverage.sh instead of source-ing.  (closes #4)

Co-authored-by: Tibor Simko <tibor.simko@cern.ch>
tests: run-coverage.sh becomes run-tests.sh

* Renames `run-coverage.sh` to `run-tests.sh` for the overall harmony
  with other inveniosoftware's Python packages.

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