Add custom_shapes.js, which will eventually replace vertex.js

src/app.js

@@ -8,6 +8,10 @@ import './core/friendly_errors/sketch_reader';
 import shape from './shape';
 shape(p5);
 
+// shapes
+import customShapes from './shape';
+customShapes(p5);
+
 //accessibility
 import accessibility from './accessibility';
 accessibility(p5);

src/shape/custom_shapes.js

@@ -0,0 +1,32 @@
+/**
+ * @module Shape
+ * @submodule Custom Shapes
+ * @for p5
+ * @requires core
+ * @requires constants
+ */
+
+// declare MyClass
+
+function customShapes(p5, fn) {
+
+    // ---- FUNCTIONS ----
+
+    // documentation here
+
+    // fn.myFunction = function() {
+    //     this.background('yellow'); // call an existing p5 function
+    // }; 
+
+    // ---- CLASSES ----
+
+    // documentation here
+
+    // p5.MyClass = MyClass;
+}
+
+export default customShapes;
+
+if (typeof p5 !== 'undefined') {
+    customShapes(p5, p5.prototype);
+}

src/shape/index.js

@@ -2,10 +2,12 @@ import primitives from './2d_primitives.js';
 import attributes from './attributes.js';
 import curves from './curves.js';
 import vertex from './vertex.js';
+import customShapes from './custom_shapes.js';
 
 export default function(p5){
   p5.registerAddon(primitives);
   p5.registerAddon(attributes);
   p5.registerAddon(curves);
   p5.registerAddon(vertex);
-}
+  p5.registerAddon(customShapes);
+}