updated package and information guide and add step for hook

example/src/index.js

@@ -1,12 +1,16 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
+// import the countdown hook here
 import { useCountdown } from 'cubetiq-react-use-countdown';
 
 const App = () => {
-    const { timeleft, start } = useCountdown();
+    const { timeleft, start } = useCountdown({
+        step: 1000,
+    });
+
     return (
         <div>
-            <button onClick={() => start(10000)}> Start Countdown </button>
+            <button onClick={() => start(10000)}>Start Countdown</button>
             <h1>Time left: {timeleft}</h1>
         </div>
     );