update readme

Author: Emily Vo

README.md

@@ -2,7 +2,7 @@ CUDA Path Tracer
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 ![](img/Renders/bunny_16000.png)
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+![](img/Renders/bunny.png)
 ![](img/Renders/Mandelbulb.png)
 
 **University of Pennsylvania, CIS 565: GPU Programming and Architecture, Project 2**