Add rtCamp banner

Author: mohdsayed

README.md

@@ -47,3 +47,7 @@ function App() {
 
 export default App;
 ```
+
+## Does this interest you?
+
+<a href="https://rtcamp.com/"><img src="https://rtcamp.com/wp-content/uploads/sites/2/2019/04/github-banner@2x.png" alt="Join us at rtCamp, we specialize in providing high performance enterprise WordPress solutions"></a>