require fix

Dear Julian,

The velocity-animte as commonjs package cannot be used at this moment in webpack environment.

The reason is the velicoty.ui.js file's define line

    define([ "velocity" ], factory);

The npm package is called velocity-animate, so that line works only if the define looks like this:

    define([ "velocity-animate" ], factory);

The name "velocity" is already taken in npmjs by some template stuff...