update start/end on video

Author: minrk

index.html

@@ -40,7 +40,7 @@ <h2 class="text-center">Evolved from the IPython Project</h2>
 
       <center>
       <iframe width="500" height="300" style="margin:20px 0px 0px"
-	      src="//www.youtube.com/embed/JDrhn0-r9Eg?start=250"
+	      src="https://www.youtube.com/embed/JDrhn0-r9Eg?start=258&end=529"
 	      frameborder="0" allowfullscreen></iframe>
       </center>
       <h4 class="text-center">