Start 2.1.1

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
Python classifiers

* Adds proper Python classifiers in setup.py file.
  (closes #7)
Typo in CHANGES

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
Copyright year in README.rst

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>