[add] added header menu to readme

README.md

@@ -1,8 +1,17 @@
 <h1 align="center">PingPlot</h1>
 
 <h4 align="center">
-	Want to create <strike>memes</strike> graphs of your network connectivity? Ping and plot away:
+	Want to create <strike>memes</strike> graphs of your network connectivity? Ping and plot away:</h4>
-</h4><br>
+
+<p align="center">
+    <strong>
+        <a href="#getting-started">Getting started</a> 
+        • <a href="#advanced-configuration">Advanced Configuration</a> 
+        • <a href="#roadmap">Roadmap</a>
+	</strong>
+</p><br>
+
+
 <p align="center">
 <img src="docs/internet.png" width="800px">
 </p>