Well
Good build for WW jungling is:
Start whit Boots + 3 health potions.
Mardred Razors
Mercury Threads
Phage
Wits End
Sunfire Cape
Upgrade Phage to Frozen Mallet or if you can afford and are fed, Trinity Force
Upgrade Mardred Razors to Mardred Bloodrazors.
As a last item, you can choose Bloodtrister for more sustain/damage, Guardian Angel just because it's troll, Frozen Hearth is good too, or almost any end game defensive item for more tanking or ofensive item whit some sustain/defense to fit the role better.