The reason I made that comment is that from what I see so far, it is rather trivial to implement. There's not a lot of detail in what I saw so far so maybe I am

The reason I made that comment is that from what I see so far, it is rather trivial to implement. There's not a lot of detail in what I saw so far so maybe I am missing something. However, if all you have is a popup or tooltip to a FAQ - the cost to implement that is much, much less than the cost of writing effective documentation for each feature. I think the tough part is putting together some set of features that justifies not only the cost - but also the risk of adding an external dependency. I hate external dependencies, particularly those from unknown players that are not open source.