docs: add robyn-rate-limits to plugins doc (#596)

docs/plugins.md

@@ -1,5 +1,32 @@
 ## Plugin Design
 
-Robyn is an extensible web framework that allows anyone to make plugins over the top of Robyn.
+Robyn is a versatile and extensible web framework that allows anyone to make plugins over the top of Robyn.
+Plugins in Robyn allow you to enhance and customize the framework's functionality to suit your specific needs. Here are some noteworthy plugins that can supercharge your Robyn-based projects:
 
-### Tutorial coming soon..
+### Rate Limit Plugin
+- Description: This plugin enables you to implement rate limiting for your Robyn application's routes. It helps prevent abuse, and brute-force attacks and ensures fair usage of your resources.
+- GitHub repository: [robyn-rate-limits](https://github.com/IdoKendo/robyn_rate_limits)
+- Installation:
+`python -m pip install robyn-rate-limits`
+- Usage:
+```py
+from robyn import Robyn
+from robyn_rate_limits import InMemoryStore
+from robyn_rate_limits import RateLimiter
+
+app = Robyn(__file__)
+limiter = RateLimiter(store=InMemoryStore, calls_limit=3, limit_ttl=100)
+
+@app.before_request()
+def middleware(request: Request):
+    return limiter.handle_request(app, request)
+
+@app.get("/")
+def h():
+    return "Hello, World!"
+
+app.start(port=8080)
+```
+In this example, robyn-rate-limits is used to enforce a rate limit of 3 requests per 100-seconds window for specific routes. If a client exceeds this limit, they will receive a "Too many requests" message.
+
+The plugin integrates seamlessly with the Robyn web framework, enhancing the security and stability of your application by preventing excessive requests from a single client.