global: license change to MIT License

[tiborsimko]

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

[tiborsimko]

Note that this is the first example implementing the license change agreed upon in reanahub/reana#86.

@diegodelemos @dinosk One thing that is different here with respect to reana-pytest-commons repository is the file heading. Here I am using simply:

# -*- coding: utf-8 -*-
#
# This file is part of REANA.
# Copyright (C) 2017, 2018 CERN.
#
# REANA is free software; you can redistribute it and/or modify it
# under the terms of the MIT License; see LICENSE file for more details.

instead of what we have there:

# -*- coding: utf-8 -*-
#
# This file is part of REANA-Pytest-Commons.
# Copyright (C) 2018 CERN.
#
# REANA-Pytest-Commons is free software; you can redistribute it and/or modify
# it under the terms of the MIT License; see LICENSE file for more details.

I propose to use the former, since all components are part of the same big REANA framework anyway, so we may rather want to advertise that.

OK with you? If so, I'll amend reana-pytest-commons as well.