Fix chainable example usage.

Author: Anubhav Saini

Chaining/index.html

@@ -11,9 +11,7 @@ <h2>Source</h2>
 
 let chainable = new Chainable();
 
-console.log(chainable.add(3));
-console.log(chainable.add(4));
-console.log(chainable.multiply(3));
+console.log(chainable.add(3).add(4).multiply(3));
             </pre>
 </div>
 <div id="console">

Chaining/scripts/main.js

@@ -2,6 +2,4 @@ import Chainable from './Chainable';
 
 let chainable = new Chainable();
 
-console.log(chainable.add(3));
-console.log(chainable.add(4));
-console.log(chainable.multiply(3));
+console.log(chainable.add(3).add(4).multiply(3));