Update font-awesome for example page

Author: wcoder

example/index.html

@@ -6,7 +6,7 @@
 	<title>Test page for sharing</title>
 	<meta name="description" content="Page description" />
 
-	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
+	<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css" integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp" crossorigin="anonymous">
 	<style>
 		/* Few styles :) */
 		.share-btn > a {
@@ -28,10 +28,11 @@
 
 
 	<div class="share-btn" data-url="https://github.com/wcoder/share-buttons">
-		<a class="btn-vk" data-id="vk"><i class="fa fa-vk"></i> VK</a>
-		<a class="btn-facebook" data-id="fb"><i class="fa fa-facebook-square"></i> Facebook</a>
-		<a class="btn-twitter" data-id="tw"><i class="fa fa-twitter"></i> Twitter</a>
-		<a class="btn-mail" data-id="mail"><i class="fa fa-envelope-o"></i> EMail</a>
+		<a class="btn-vk" data-id="vk"><i class="fab fa-vk"></i> VK</a>
+		<a class="btn-facebook" data-id="fb"><i class="fab fa-facebook-square"></i> Facebook</a>
+		<a class="btn-twitter" data-id="tw"><i class="fab fa-twitter"></i> Twitter</a>
+		<a class="btn-telegram" data-id="tg"><i class="fab fa-telegram"></i> Telegram</a>
+		<a class="btn-mail" data-id="mail"><i class="fas fa-at"></i> EMail</a>
 	</div>