Add watch option and/or event to trigger autoscroll

[andreicojea]

If there is an image, which gets loaded after a while, or anything else with a variable height, it doesn't trigger autoscroll. At this point, it doesn't seem to be any way to trigger autoscroll programatically.

[stgogm]

I'm thinking of adding an event that you can call from anywhere with $broadcast, something like:

$scope.$broadcast('ngScrollGlue.scroll');

And this will scroll if glued as expected. Could also add an argument to force the scroll:

$scope.$broadcast('ngScrollGlue.scroll', true);

What do you think @andreicojea?