Vaadin jetty hint

Doc/Sda1/vaadin.xml

 <?xml version="1.0" encoding="UTF-8"?>
-<section version="5.1" xml:id="sda1SectVaadin"
+<section version="5.0" xml:id="sda1SectVaadin"
          xmlns="http://docbook.org/ns/docbook"
          xmlns:xlink="http://www.w3.org/1999/xlink"
          xmlns:xi="http://www.w3.org/2001/XInclude"
@@ -96,6 +96,23 @@
                     <para role="eclipse">Sda1/Vaadin/IntegerSetSkeleton</para>
                   </annotation>
                 </listitem>
+
+                <listitem>
+                  <para>Starting the Jetty server at localhost:8080
+                  requires:</para>
+
+                  <itemizedlist>
+                    <listitem>
+                      <para><command>mvn</command>
+                      <option>install</option></para>
+                    </listitem>
+
+                    <listitem>
+                      <para><command>mvn</command>
+                      <option>jetty:run</option></para>
+                    </listitem>
+                  </itemizedlist>
+                </listitem>
               </orderedlist>
             </tip>
           </question>