docs: added example for useTimeout (#38)

Author: tanmaylaud

src/useTimeout.ts

@@ -31,6 +31,20 @@ function setChainedTimeout(
 /**
  * Returns a controller object for setting a timeout that is properly cleaned up
  * once the component unmounts. New timeouts cancel and replace existing ones.
+ *
+ *
+ *
+ * ```tsx
+ * const { set, clear } = useTimeout();
+ * const [hello, showHello] = useState(false);
+ * //Display hello after 5 seconds
+ * set(() => showHello(true), 5000);
+ * return (
+ *   <div className="App">
+ *     {hello ? <h3>Hello</h3> : null}
+ *   </div>
+ * );
+ * ```
  */
 export default function useTimeout() {
   const isMounted = useMounted()