Documentation pour déployer sur Heroku.
Fixes #3

Change-Id: I84dac11caafa203474083fafcf1a8524bfdba4a1
Heroku documentation

Change-Id: I6086ec9a5945aae3b01bcc42f972c321d6c47ee0
Merge branch 'develop' of
https://github.com/peugene/mapMyFairy-server.git into develop

Conflicts:
	documentation/history.txt