Create README.md

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README.md

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+# SimpleProxy Usage Guide
+
+## Overview
+
+`SimpleProxy` is a lightweight proxy tool that uses a configuration file to define proxy settings. The configuration file, `config.json`, is **required** for the proxy to function.
+
+## Usage
+
+To run SimpleProxy, execute the following command in your terminal:
+
+```sh
+simpleproxy config.json
+```
+
+### Configuration File
+
+The `config.json` file is essential for SimpleProxy to know which ports to bind to and which remote addresses to proxy from. Below is an example of the configuration file:
+
+```json
+{
+    "proxy": [
+        /*
+        {
+            "local" : ":port",      // Port to bind to, defaults to remote port
+            "remote": "addr:port",  // Remote address to proxy from
+            "type"  : "both"        // Protocol type: tcp, udp, or both; defaults to both
+        }
+        */
+        {
+            "remote": "example.com:25565"
+        },
+        {
+            "remote": "example.com:42420"
+        }
+    ]
+}
+```
+
+### Configuration Options
+
+Each entry in the `proxy` array represents a proxy rule with the following options:
+
+- **local**: Optional. The port to bind to locally. If omitted, the proxy will use the port specified in the `remote` field.
+- **remote**: Required. The remote address and port to proxy from.
+- **type**: Optional. Specifies the protocol type (`tcp`, `udp`, or `both`). Defaults to `both` if not specified.
+
+### Example Configuration
+
+Here are a couple of examples based on the configuration options:
+
+1. **Basic Configuration:**
+
+   ```json
+   {
+       "proxy": [
+           {
+               "remote": "example.com:25565"
+           },
+           {
+               "remote": "example.com:42420"
+           }
+       ]
+   }
+   ```
+
+   In this configuration, SimpleProxy will bind to ports `25565` and `42420` locally, and proxy traffic to `example.com` on the same ports.
+
+2. **Custom Local Port and Protocol Type:**
+
+   ```json
+   {
+       "proxy": [
+           {
+               "local": ":8080",
+               "remote": "example.com:25565",
+               "type": "tcp"
+           },
+           {
+               "remote": "example.com:42420",
+               "type": "udp"
+           }
+       ]
+   }
+   ```
+
+   In this configuration:
+   - The first proxy rule binds to port `8080` locally and proxies TCP traffic to `example.com:25565`.
+   - The second proxy rule binds to port `42420` locally (same as the remote port) and proxies UDP traffic to `example.com:42420`.
+
+## Running the Proxy
+
+After setting up the `config.json` file with your desired proxy rules, run SimpleProxy using the command mentioned earlier:
+
+```sh
+simpleproxy config.json
+```
+
+This will start the proxy based on the defined configuration. Make sure the `config.json` file is in the same directory as the `simpleproxy` executable or provide the correct path to the configuration file.