Updated builds.

build/three.js

@@ -9041,6 +9041,17 @@ THREE.BufferGeometry.prototype = {
 
 	constructor: THREE.BufferGeometry,
 
+	addAttribute: function( name, type, numItems, itemSize ) {
+
+		this.attributes[ name ] = {
+
+			itemSize: itemSize,
+			array: new type( numItems * itemSize )
+
+		};
+
+	},
+
 	applyMatrix: function ( matrix ) {
 
 		var positionArray;

examples/webgl_buffergeometry.html

@@ -82,10 +82,10 @@
 
 				var geometry = new THREE.BufferGeometry();
 
-				geometry.addAttribute( 'index', Uint16Array, 3 * triangles, 1 );
-				geometry.addAttribute( 'position', Float32Array, 3 * triangles, 3 );
-				geometry.addAttribute( 'normal', Float32Array, 3 * triangles, 3 );
-				geometry.addAttribute( 'color', Float32Array, 3 * triangles, 3 );
+				geometry.addAttribute( 'index', Uint16Array, triangles * 3, 1 );
+				geometry.addAttribute( 'position', Float32Array, triangles * 3, 3 );
+				geometry.addAttribute( 'normal', Float32Array, triangles * 3, 3 );
+				geometry.addAttribute( 'color', Float32Array, triangles * 3, 3 );
 
 				// break geometry into
 				// chunks of 21,845 triangles (3 unique vertices per triangle)

src/core/BufferGeometry.js

@@ -42,8 +42,8 @@ THREE.BufferGeometry.prototype = {
 
 		this.attributes[ name ] = {
 
-			itemSize: 	 itemSize,
-			array: 		 new type( numItems * itemSize )
+			itemSize: itemSize,
+			array: new type( numItems * itemSize )
 
 		};