How To Flash AOKP Jelly Bean on Galaxy Nexus

Link: Click Me!
Features you will see (but not limited to) in this build:

• Notification Toggles
• Lockscreen tweaks (no custom targets yet)
• Navigation bar modifications
• Custom kernel performance options
• LED colors
• Notification wallpapers
• Phone ringer modifications (Flip call to silent, silent/vibrate when headphones are in)
• Plus more!

Instructions

• Download build for your device, place on SD card 
• Download gapps, place on SD card 
• Reboot into recovery 
• Wipe/factory reset! If you think you can get away without wiping from ICS -> JellyBean, you won't be happy camper. Wipe! 
• Flash jb-build-1
• Flash Gapps
• Reboot