add caniuse link

_posts/en/2016-08-2-copy-to-clipboard.md → _posts/en/2016-08-02-copy-to-clipboard.md

@@ -15,7 +15,7 @@ This is a simple tip, this week I had to create a common "Copy to Clipboard" but
 It's easy, the bad thing is that we must have to add an `<input/>` with the text to be copied to the DOM. Then, we selected the content and executes the copy command with [execCommand](https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand).
 `execCommand('copy')` will copy the actual selected content.
 
-Also, this command that now is supported by all the latest version of browsers, allows us to execute another system commands like `copy`, `cut`, `paste`, and make changes like fonts color, size, and much more.
+Also, this command that now is [supported](http://caniuse.com/#search=execCommand) by all the latest version of browsers, allows us to execute another system commands like `copy`, `cut`, `paste`, and make changes like fonts color, size, and much more.
 
 ```js
 document.querySelector('#input').select();