update readmes on TRANSFORMERS_VERSION

.runpod/README.md

@@ -32,6 +32,9 @@ All behaviour is controlled through environment variables:
 
 For complete configuration options, see the [full configuration documentation](https://github.com/runpod-workers/worker-vllm/blob/main/docs/configuration.md).
 
+### Specify Transformers Version
+To change the version of the [Transformers library](https://github.com/huggingface/transformers) use the `TRANSFORMERS_VERSION` environment variable to specify the version you want to use. Note this might break the handler, so use for development purposes. 
+
 ## API Usage
 
 This worker supports two API formats: **RunPod native** and **OpenAI-compatible**.

README.md

@@ -77,6 +77,10 @@ Any env var whose name matches a valid `AsyncEngineArgs` field (uppercased) is a
 
 For the complete list of all available environment variables, examples, and detailed descriptions: **[Configuration](docs/configuration.md)**
 
+### Specify Transformers Version
+To change the version of the [Transformers library](https://github.com/huggingface/transformers) use the `TRANSFORMERS_VERSION` environment variable to specify the version you want to use. Note this might break the handler, so use for development purposes. 
+
+
 ## Option 2: Build Docker Image with Model Inside
 
 To build an image with the model baked in, you must specify the following docker arguments when building the image.