Web UI Instructions, Update README.md

Added web ui instructions

README.md

@@ -37,6 +37,7 @@ docker pull hlohaus789/g4f
       - [Install using pypi](#install-using-pypi)
     + [Docker for Developers](#docker-for-developers)
 - [💡 Usage](#-usage)
+  * [The Web UI](#the-web-ui)
   * [The `g4f` Package](#the-g4f-package)
     + [ChatCompletion](#chatcompletion)
       - [Completion](#completion)
@@ -182,6 +183,14 @@ docker-compose down
 
 ## 💡 Usage
 
+### The Web UI
+
+To use it in the web interface, type the following codes in the command line.
+```python3
+from g4f.gui import run_gui
+run_gui()
+```
+
 ### The `g4f` Package
 
 #### ChatCompletion