It's going to be the standard Warrior rotation except starting out with shadowstab ad infinitum. Actually, I almost always start out with charge(err, I mean Surprise Attack), then go into the rotation. If you are a pot addict or have the Aoth cape you can prep with those to get into your rage based attacks early, but to tell the truth, shadowstab works really well as filler until you build the rage so i don't bother even though I have my aoth cape on macro.
Sk8rdan posted this in an earlier thread:
For bosses, would recommend the following rotation.
Blood Dance..........if you don't have rage yet. could use blind stab instead
Probing Attack......to make the boss vunerable
Keen Attack.........for the crit damage bonus
Filler...................usually Shadow Stab
Filler...................Slash can also be used for the extra bleed, if you have TP in it
Probing Attack......to make the boss vunerable
Open Flank...........to make the boss weakened
Splitting Chop.......to lower the boss's Defense, and deal big damage
Blood Dance.........high damage filler that should be off cooldown by now
Probing Attack......to make the boss vunerable
Keen Attack.........crit damage bonus again
Blasting Cyclone...if you have the rage, this does high damage, even to a single target
Filler...................you can also use whirlwind if there are adds
Probing Attack......to make the boss vunerable
Open Flank...........to make the boss weakened
Thunder...............Purely for the high damage. Stun won't work on most bosses
Repeat
I don't recall seeing a "rotation" for a using a 2-hnder for a W/R, I would probably find one for one of the other warrior combos and adjusting...or don't bother.