added heartbeat endpoint
blah
Merge branch 'develop' into feature/permission_session

Conflicts:
	dist/angular-storycloud-sdk.js
	dist/angular-storycloud-sdk.min.js
	src/resources.js
update model to have array of files and recipients
revert - meant for a branch
Added fileId
Merge pull request #5 from StoryCloud/feature/permission_session

Enables live permission checking on the server
Merge branch 'develop' into feature/group-permission