add readme for PR support (#288)

Author: jtydhr88

README.md

@@ -22,6 +22,7 @@ terminal.
 - 🗄️ Download checkpoints and save model hash
 - 💻 Cross-platform compatibility (Windows, macOS, Linux)
 - 📖 Comprehensive documentation and examples
+- 🎉 install pull request to ComfyUI automatically
 
 ## Installation
 
@@ -111,6 +112,17 @@ Comfy provides commands that allow you to easily run the installed ComfyUI.
   - Since "Comfy Server Running" in `comfy env` only shows the default port 8188, it doesn't display ComfyUI running on a different port.
   - Background-running ComfyUI can be stopped with `comfy stop`.
 
+- to run ComfyUI with a specific pull request:
+
+  `comfy install --pr "#1234"`
+
+  `comfy install --pr "jtydhr88:load-3d-nodes"`
+
+  `comfy install --pr "https://github.com/comfyanonymous/ComfyUI/pull/1234"`
+
+  - If you want to run ComfyUI with a specific pull request, you can use the `--pr` option. This will automatically install the specified pull request and run ComfyUI with it.
+  - Important: When using --pr, any --version and --commit parameters are ignored. The PR branch will be checked out regardless of version settings.
+
 ### Managing Custom Nodes
 
 comfy provides a convenient way to manage custom nodes for extending ComfyUI's functionality. Here are some examples: