Merge = function (obj1, obj2)
{
    var clone = Clone(obj1);

    for (var key in obj2)
    {
        if (!clone.hasOwnProperty(key))
        {
            clone[key] = obj2[key];
        }
    }

    return clone;
}
Creates a new Object using all values from obj1 and obj2.
If a value exists in both obj1 and obj2, the value in obj1 is used.

This is only a shallow copy. Deeply nested objects are not cloned, so be sure to only use this
function on shallow objects.

@function Phaser.Utils.Objects.Merge
@since 3.0.0

@param {object} obj1 - The first object.
@param {object} obj2 - The second object.

@return {object} A new object containing the union of obj1's and obj2's properties.