Update README.md

Author: Rohit Malhotra

README.md

@@ -484,7 +484,7 @@ class Test(ThreeDScene):
 
 Alright! Finally some 3D graphs. So, the first ThreeDSurface inherits from parametric surfaces. This will be used to define our 3D graph in terms of a mathematical equation. The **kwargs** parameter are just some tweaks that change the color of the the graph, or how much of the graph should be rendered. The method **func** defines the function. It returns the **z** given the x and y parameters (which are required for 3D graphs). 
 
-The ThreeDSurface is called in the Test class and is manipulated like a mobject. 
+The ThreeDSurface is called in the Test class and is manipulated like a mobject. You render the 3D graph like any other mobject in manim.
 
 A continuation of this tutorial will follow to explain how the camera works. For now, the camera is basically your eyes.