THREE.js - Can someone please explain how to use this library?
<p>I downloaded three.js (three.js-master) and am confused by what I'm seeing because of the following 3 things:
- There is a Three.Legacy.js vs a Three.js under the /src folder.
- Also under the /src folder there are various smaller files (e.g. scene.js). 
- Under /examples/js there are even more various files.</p>

<p><strong>Question</strong></p>

<p>If I want to create a new application using the latest &amp; greatest version of Three.js, what files must I be referencing?</p>

<p>thanks.</p>

<p><strong>Update</strong></p>

<p>So I discovered that three.js exists under /src AND under /build. The one under /src is a mere 7 KB in size while the other one is 949 KB. The 7KB file has many things missing. What is the purpose of this file and why does it even exist? It's simply confusing.</p>