AlwaysHDREnabled--Improved! :D

Alright so I went ahead and did some work on AlwaysHDREnabled..I've added a preference bundle with an on/off switch and added some text on the settings page (check it out! :D). I also made it so all changes take place *without* a respiring, the only thing required is that the Camera app is closed. 

I hope you like my changes! :D let me know what you think, this is my first fork :P 
Good idea btw, not a bad execution for your first tweak!

Oh, P.S., the code should be *fairly* self-explanatory, however, since this is your first tweak you might not understand everything. If you don't just say the word and I'll add a bunch of comments explaining what's going on :P