add web playground README

Author: sebsto

web-playground/README.md

@@ -6,15 +6,89 @@ Welcome to the Swift Foundation Model (FM) Playground, an example app to explore
 
 ## Overview
 
-> 🚧 Under construction 🚧
+The Swift FM Playground is a web application that demonstrates how to use Amazon Bedrock foundation models with the AWS SDK for Swift. It consists of:
+
+- A Swift backend that interfaces with Amazon Bedrock
+- A React frontend that provides a user-friendly interface for interacting with the models
 
 ## Prerequisites
 
-> 🚧 Under construction 🚧
+- [Swift 6.0](https://www.swift.org/download/) or later
+- [Node.js](https://nodejs.org/) 18 or later
+- [npm](https://www.npmjs.com/) or [yarn](https://yarnpkg.com/)
+- AWS account with access to Amazon Bedrock
+- AWS credentials configured locally
 
 ## Running the Application
 
-> 🚧 Under construction 🚧
+### Backend Setup
+
+1. Navigate to the backend directory:
+   ```bash
+   cd backend
+   ```
+
+2. Build and run the Swift backend:
+   ```bash
+   swift build
+   swift run
+   ```
+
+   The backend server will start on port 8080 by default.
+
+#### Advanced Backend Configuration
+
+You can customize the backend behavior with the following options:
+
+- **Change Log Level**:
+  ```bash
+  swift run PlaygroundAPI --log-level debug
+  ```
+  Available log levels: trace, debug, info, notice, warning, error, critical
+
+  You can also use the LOG_LEVEL environment variable.
+
+  ```bash 
+  LOG_LEVEL=trace swift run
+  ```
+
+- **Use AWS SSO Authentication**:
+  ```bash
+  swift run PlaygroundAPI --sso
+  ```
+
+- **Specify AWS Profile**:
+  ```bash
+  swift run PlaygroundAPI --profile-name my-profile
+  ```
+
+- **Combined Options**:
+  ```bash
+  swift run PlaygroundAPI --sso --profile-name my-profile --log-level debug
+  ```
+
+### Frontend Setup
+
+1. Navigate to the frontend directory:
+   ```bash
+   cd frontend
+   ```
+
+2. Install dependencies:
+   ```bash
+   npm install
+   # or if you use yarn
+   yarn install
+   ```
+
+3. Start the React development server:
+   ```bash
+   npm run dev
+   # or if you use yarn
+   yarn dev
+   ```
+
+   The frontend development server will start on port 3000.
 
 ## Accessing the Application