Update README.md

Author: smsend

README.md

@@ -1,5 +1,5 @@
 <a href="https://www.smsend.it/rest-api/" title="smSend developer guide"><img src="https://www.smsend.it/img/visual/smsend-developers.jpg" alt="smSend developer guide" title="smSend developer guide"></a>
-<h1><b>smSend Rest-API</b></h1>
+<h1><b>smSend: SMS Rest-API</b></h1>
 <a href="https://www.smsend.it/rest-api/" title="smSend developer guide">https://wwww.smsend.it</a>
 <p>The API is divided into subsections, which are briefly described below.</p>
 <p>For details about each section, please refer to the respective section.</p>
@@ -9,6 +9,7 @@
 <li><a href="https://www.smsend.it/rest-api/">Explore API documentation</a>
 <li>Test your app with our SMS REST API</li>
 </ol>
+<hr>
 <ol>
   <li>
     <p><b>Authentication:</b><br>