What Runes and Items should I build to Rengar???(I wish him to be all-rounded)

I think rengar is good jungler, so try boots and 3 health potions, then wriggle's lantern, bonetooth necklace, phage, hexdrinker, etc. upgrade those items etc etc ;p
Trinity force is also good item which give you tons of damage.

i build him cloth and 5health pots,boots of mobility latern,bf, phage warmog infinity and frozen malet,
runs: red-dmg yellow-armor blue-magic res-the big ones armor pen i works awesome xD so gl