[IMP] Add a LICENCE.md file and a mention to GPLv3 in the README.#71

Merged

sebalix merged 1 commit intoOCA:masterfrom mmequignon:licence

Feb 21, 2018

+639

Commits on Feb 17, 2018

[IMP] Add a LICENCE.md file and a mention to GPLv3 in the README.
mmequignon
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