Gflash updated to version 1.4.4
-AE2 Stuff 0.5.1.61
(feel free to request something if you want it, if it's not heavy but it's useful, I might add it)
Type in the modpack name (Gflash) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Gflash from the list on the left. The launcher will handle everything else!