Since the update of 2-12-2011 jungle is very bad and i want show you i totally different way of play with Shaco.

I choose those masteries for deal very damage and revive fast and if you need recall faster

Since the update jungle is very bad so you will need speed, criticals and atack speed and Thornmail for a big finally armor

You should put Jack In The Box to level 1, next Two-Shiv Poison to level 1 too and Deceive to 1 too. Now Level up only Two-Shiv Poison and next Deceive and finally Jack In The Box.

Choose Ghost and Ignite

FIrst go to the grass and put the little boxes there for if the enemy come will go back.
Until level 6 i think is better not go to the enemy turrent only kill minions for earn gold and exp.
For run away use the special for do a clone, and next use deceive and ghost, and you will be invisible and very fast. If you have time cast a Box in front of you and the enemy will have fear and come back for a seconds