Sample code for SGDEX EntitlementView

Would it be possible to post working sample code on implementing username/password authentication via EntitlementView in SGDEX as per https://github.com/rokudev/SceneGraphDeveloperExtensions/blob/master/documentation/1-components.md#entitlementhandler

I am currently using TimeGridView sample code which works great  but would like to first display a login screen before displaying the grid.  Authentication should be done via a json call and the credentials should be stored via roRegistry if login is successfull so that the user does not have to login again the next time.

Thanks