Update app.py

app.py

@@ -6,6 +6,8 @@ from datetime import datetime
 
 os.system('pip install ./gaussiansplatting/submodules/diff-gaussian-rasterization')
 os.system('pip install ./gaussiansplatting/submodules/simple-knn')
+os.system('pip install git+https://github.com/KAIR-BAIR/nerfacc.git@v0.5.2')
+os.system('pip install git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=bindings/torch')
 
 example_inputs = [[
         "A fox."