Neopop V.2 Released the 2 files from the neopop folder in the same directory on your SD (i put mine in root). Then copy the rom you want to play (only supports 1 atm) in the same directory as "rom.ngp" (if the extension is .npc just rename it, i had to do that).

Now go to game>SD>folder>neopop.gpe and run it. There will be a green square on the screen for a few seconds then the game will start.