Update jshint.
Update jshint.

Silverwolf90/vexflow,Tails/vexflow,aaronmars/vexflow,aaronmars/vexflow,Tails/vexflow,aaronmars/vexflow,Huji/vexflow,Tails/vexflow,Huji/vexflow,Silverwolf90/vexflow,Huji/vexflow,Silverwolf90/vexflow