Alright,
here. Jmz was the person that started the whole thing but I think he gave the project to simonsimons34. Jmz has uploaded a boot.img for jelly bean. I've been using that one. I think it downloads as a .zip. So extract it to wherever your fastboot is, change the name to 'boot.img', get in fastboot on your phone and type
Code:
fastboot flash boot boot.img
The way I've been doing it is flashing the rom, rebooting from recovery (which leaves it on boot logo), then rebooting by holding the power button down. as soon as it switches to black screen release power and hold volume down. it'll boot into bootloader. let it load up and then click fastboot. (then do above). Then from the bootloader menu go to recovery and flash gapps. then reboot and you should boot.