Well, I should clarify - it's not really a rotation. It's a priority system. For the short-and-sweet version, there really isn't all that much to know. Ideally, this is how I would get into my rotation. After I'm in, it's all a matter of keeping up bleeds, debuffs, and buffs.
- Feral Charge
- Savage Roar (1 combo point)
- Shred (Until 5 Combo Points)
- Shred (While maintaining Rake + Mangle Debuff)
- Ferocious Bite if there is more than 10 seconds left on both 5 Combo Point Rip and Savage Roar
And that's more or less it. Again, be sure to keep up Mangle Debuff, Rake, 5 Combo Point Rip, 3 stacks of Faerie Fire, and Savage Roar. After that, it's all a matter of dumping energy accurately with Shred, knowing when to save Combo Points to refresh cooldowns, and when to blow them on a solid Ferocious Bite.
I hope this write-up has helped to add clarification; and, as always, good luck!