Walk animation working

Removed the canvas translate() and rot() bits from the _drawPlayerAvatar function.  Canvas doesnt move, player does.  Next up is proper asset loading.
Walk Anim Edit

There is a rest frame for walking up and down that was added to the animation and made it look wonky, so I removed it.  Had to separate walking NS from EW since EW use all frames still.
Setting up assetloading

Moved index.html to /client and added scripts to it for loading.  Will have to repath some things and modify all my old hacky scripts from when I started.
Added welcome page

Passable looking placeholder with a start button
Everything except Yepnope working

It's depreciated, so I'll need a different loader.  Everything else appears to work as much as it can without the loader.
Updated assetLoader.js

Yepnope is not the problem, it's working as intended.  Assetloader was an old version from the Udacity class that does not apply when using yepnope.js