Add minimal transformers version requirement (#2)

- Add minimal transformers version requirement (3085d5d44ccbc17a915accbce9d8ef78c513bc91)


Co-authored-by: Bertrand Thia <bthia97@users.noreply.huggingface.co>

README.md

@@ -39,6 +39,16 @@ alt="drawing" width="600"/>
 You can use the raw model for tasks like zero-shot depth estimation. See the [model hub](https://huggingface.co/models?search=depth-anything) to look for
 other versions on a task that interests you.
 
+### Requirements
+
+`transformers>=4.45.0` 
+
+Alternatively, use `transformers` latest version installed from the source:
+
+```
+pip install git+https://github.com/huggingface/transformers
+```
+
 ### How to use
 
 Here is how to use this model to perform zero-shot depth estimation: