collect md files

Author: drcmda

api.md renamed to markdown/api.md

@@ -155,16 +155,16 @@ ReactDOM.render(
 
 # API
 
-- [api.md](api.md)
-- [pitfalls.md](pitfalls.md)
-- [recipes.md](recipes.md)
+- [api.md](/markdown/api.md)
+- [pitfalls.md](/markdown/pitfalls.md)
+- [recipes.md](/markdown/recipes.md)
 
 # Fundamentals
 
 1. Make sure you have a [basic grasp of Threejs](https://threejs.org/docs/index.html#manual/en/introduction/Creating-a-scene). Keep that site open.
 2. When you know what a scene is, a camera, mesh, geometry, material, fork the [demo above](https://github.com/react-spring/react-three-fiber#what-does-it-look-like).
 3. [Look up](https://threejs.org/docs/index.html#api/en/objects/Mesh) the JSX elements that you see (mesh, ambientLight, etc), _all_ threejs exports are native to three-fiber.
-4. Try changing some values, scroll though our [Api](api.md) to see what the various settings and hooks do.
+4. Try changing some values, scroll though our [Api](/markdown/api.md) to see what the various settings and hooks do.
 
 Some reading material: