Add LFS check (#6)

- Add LFS check (6c9b6a95f625e9b554d1dc6592a407bd823f5dbc)


Co-authored-by: Rob Hughes <RobHughesArm@users.noreply.huggingface.co>

README.md

@@ -77,6 +77,7 @@ Clone the NSS model repository from Hugging Face
 ```powershell
 git clone https://huggingface.co/Arm/neural-super-sampling
 cd neural-super-sampling
+git lfs pull # Make sure Git LFS is installed - https://git-lfs.com/
 ```
 
 ### Run the Scenario