Updated SERP (markdown)

SERP.md

@@ -24,6 +24,28 @@ This is a method of performing SERP using third-party services:
 
 This is the easiest and safest option among those previously presented.
 
+When implementing in code, it looks like the following:
+
+```javascript
+var HTTP = require("lib/http");
+
+var response = HTTP.create()
+    .setVariables({
+        "api_key": "YOUR_API_KEY"
+    })
+    .setProxy({
+        "enabled": true,
+        "provider": "YOUR_SERP_SERVICE",
+        "type": "serp"
+    })
+    .open("GET", "https://example.org/?q=test")
+    .send();
+
+console.log("responseBody:", response.responseBody);
+```
+
+This example demonstrates how to set up an HTTP request with a proxy for SERP using an API key and a third-party service.
+
 ## Report abuse
 - [GitHub Security Advisories](https://github.com/gnh1201/welsonjs/security)
 - abuse@catswords.net