Added Resize 3D Viewer

[rbonghi]

Now you can resize the Viewer with a function resize(with, height):

example:

var viewer3D = new ROS3D.Viewer({
        divID: divName,
        width: window.innerWidth,
        height: window.innerHeight,
        antialias: true
    });

window.onresize = function(event) {
   viewer3D.resize(window.innerWidth, window.innerHeight);
};

[rctoris]

👍

Build seems to be failing over some mixed whitespace issues. https://travis-ci.org/RobotWebTools/ros3djs/builds/67052188#L164

[rbonghi]

Fixed 👍