Corrects join method to support only one object.
Merge branch 'master' of github.com:OT-SIMS-2013/server
Merge branch 'master' of github.com:OT-SIMS-2013/server

Conflicts:
	src/Disponif/Services.php
Merge branch 'master' of github.com:OT-SIMS-2013/server

Conflicts:
	src/Disponif/Services.php