Add transform property

[piec]

Hi,

I use jsdom to pre-render a dom with d3 but it's missing the transform styles This commit adds support for transform

Also mentioned in tmpvar/jsdom#1321 and NV/CSSOM#78

Cheers

[hraban]

Is this planned for merging ever? I'm currently using

mynode.attributes['style'].value += ' transform: translate(-50%, -50%);';

which is a bit of an eye sore :P

[Hikariii]

What is the problem with merging this?

[Hikariii]

A temporary work-around can be this:

Object.defineProperty(jsDom.window._core.CSSStyleDeclaration.prototype, 'transform', {
    get : function () {
        return this.getPropertyValue('transform');
    },
    set : function (v) {
        this._setProperty('transform', v);
    },
    enumerable: true,
    configurable: true
});