Short written guide (Mainly by Faryaab):
-Copy Google Apps and ROM to your internal SD Card
-Do a Wipe/Factory Reset
-Wipe cache & Dalvik
-Flash Android 4.1.1 JB ROM
-Flash Google Apps
-Reboot your device!
When flashing a new build, when already on this rom, such as going from Build 2 to Build 3 – there is no need to wipe.
Simply install the ROM, and after it has finished, don’t forget to flash GAAPS!
(Pictures from JB 4.1.1 Build 2, with the updated Google Now)
Google Now, video demonstration:
(Now fully working, after build 2 – which is not shown in the video)
Hope you enjoyed my guide!