add methods to get buffer pointers

src/main/java/electrosphere/renderer/model/Mesh.java

@@ -609,4 +609,28 @@ public class Mesh {
         return this.useElementArray;
     }
 
+    /**
+     * Gets the vertex buffer's pointer
+     * @return The vertex buffer's pointer
+     */
+    public int getVertexBuffer(){
+        return vertexBuffer;
+    }
+
+    /**
+     * Gets the normal buffer's pointer
+     * @return The normal buffer's pointer
+     */
+    public int getNormalBuffer(){
+        return normalBuffer;
+    }
+
+    /**
+     * Gets the texture coord buffer's pointer
+     * @return The texture coord buffer's pointer
+     */
+    public int getTextureCoordBuffer(){
+        return textureCoordBuffer;
+    }
+
 }