Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Will add runes/skill sequence later...Q (and ult of course) are your two most important. W is nice when running away and catching someone in a bush, and E is great for slowing and escaping close quarter confrontations. This build is attack speed, attack damage, and critical hit. I've tried it a bunch already, will post my screenshots when i edit the rest. :) enjoi.