Fixed two Lightning JIT typos and removed non-jb message and fixed devices in README.md

The message said that the non-jailbreak was extremely outdated and couldn't be updated again...so I removed it and someone wrote LIghtning Jit instead of Lightning Jit in ReadMe :P I also fixed some device names in the README.

The hidden settings said Lighting JIT instead of Lightning JIT (c'mon guys, learn how to type Lightning JIT!)

YAY, MY FIRST PULL REQUEST (don't ruin the moment)