Docs: Added getScaleFromMatrix method to Vector3.

docs/api/core/Vector3.html

@@ -156,6 +156,11 @@ Sets this vector extracting position from matrix transform.
 Sets this vector extracting Euler angles rotation from matrix transform.
 </div>
 
+<h3>.getScaleFromMatrix( [page:Matrix4 m] ) [page:Vector3]</h3>
+<div>
+Sets this vector extracting scale from matrix transform.
+</div>
+
 <h3>.equals( [page:Vector3 v] ) [page:Vector3]</h3>
 <div>
 Checks for strict equality of this vector and *v*.