• https://cdn.bootcdn.net/ajax/libs/three.js/r31/Three.js
• https://cdn.bootcdn.net/ajax/libs/three.js/r31/Three.min.js
• https://cdn.bootcdn.net/ajax/libs/three.js/r31/ThreeDebug.js
• https://cdn.bootcdn.net/ajax/libs/three.js/r31/ThreeDebug.min.js
• https://cdn.bootcdn.net/ajax/libs/three.js/r31/ThreeExtras.js
• https://cdn.bootcdn.net/ajax/libs/three.js/r31/ThreeExtras.min.js