Rename babylon.InstancedMesh.js to babylon.instancedMesh.js

Babylon/Mesh/babylon.InstancedMesh.js

@@ -150,4 +150,4 @@ var BABYLON;
     })(BABYLON.AbstractMesh);
     BABYLON.InstancedMesh = InstancedMesh;
 })(BABYLON || (BABYLON = {}));
-//# sourceMappingURL=babylon.instancedMesh.js.map
+//# sourceMappingURL=babylon.instancedMesh.js.map