Wrap-around notification icon

[mrodalgaard]

E.g. XCode and Eclipse has a nice little feature when searching a document. When the active search does a wrap-around an icon notification flashes shortly to indicate that you have reached the bottom or top and are starting over.

It might just be me. Otherwise I can create a PR for this small addition, probably with a more discreet notification.

[ryanjbonnell]

BBEdit has a similar search wrap-around UI notification. It would be nice to see this subtle refinement added to Atom as well.