experimental JB for ad-supported devices (5.18.1-5.18.5) (no Colorsoft & Scribe support)

Please read install instructions on the kindle modding guide: https://kindlemodding.org/jailbreaking/AdBreak/ Or use the guide.txt included

• thx hhhhhhhhh for making the JB
• thx Chris Evans (@scarybeasts) for the writeup on CVE-2012-3748.
• Thx penguins184 for the guide