Challenge: Noisy step walker

Turn a random walker into a noise-based walker instead.

Use noise for the step size

Hint

var Walker = function() { }; Walker.prototype.walk = function() { var xStepSize = ; var yStepSize = ; };

This walker takes a random step each time. Change it to use a noise-based step size instead. The best way
to do this is to setup two timer properties for x and y that you increment each time, and map to a
reasonable value.