Merge branch 'feature/issue-101-interactionmachine-api-request-should-throw-an-error-for-api-failures' into feature/issue-99-add-contact-and-contactstore
Merge branch 'develop' into feature/issue-99-add-contact-and-contactstore
Stub out ContactStore (with docstrings)
Stub out ContactStore tests
Add a ContactStore to InteractionMachine, using 'ussd' as the config default for delivery_class
Implement the basics for ContactStore
Add test to check that we set up the im's config store in InteractionMachine.setup()
Merge branch 'feature/issue-114-fix-odd-things-in-contacts-tests' into feature/issue-99-add-contact-and-contactstore

Conflicts:
	test/test_contacts/test_api.js
Merge branch 'develop' into feature/issue-99-add-contact-and-contactstore
Fix ContactStore's docstrings
Assert that the contact's delivery class is set correctly in ContactStore.setup()
Merge branch 'develop' into feature/issue-99-add-contact-and-contactstore

Conflicts:
	lib/contacts/api.js
	test/test_contacts/test_api.js
Merge branch 'feature/issue-99-add-contact-and-contactstore' into develop