added CodePen and Carbon

pages/utility/index.vue

@@ -103,6 +103,11 @@ export default {
           desc: 'JSFiddle is for: Demos for docs, Bug reporting (test-case) for Github Issues, Live code collaboration, Code snippets hosting for free!',
           url: 'https://jsfiddle.net'
         },
+        {
+          title: 'CodePen',
+          desc: 'CodePen is an online community for testing and showcasing user-created HTML, CSS and JavaScript code snippets.',
+          url: 'https://codepen.io/'
+        },
         {
           title: 'Gifless',
           desc: 'Create emoji and text gifs in seconds',
@@ -123,6 +128,11 @@ export default {
           desc: 'A collective list of free APIs for use in software and web development.',
           url: 'https://github.com/public-apis/public-apis'
         },
+        {
+          title: 'Carbon',
+          desc: 'Create and share beautiful images of your source code.',
+          url: 'https://carbon.now.sh'
+        }
       ]
     }
   },