Documented poll JS start and added demo.

src/main/java/net/bootsfaces/demo/PollDemoBean.java

@@ -2,17 +2,18 @@
 
 import java.io.Serializable;
 import java.util.Date;
-
 import javax.faces.bean.ManagedBean;
-import javax.faces.bean.RequestScoped;
+import javax.faces.bean.ViewScoped;
 import javax.faces.event.ActionEvent;
 
-@RequestScoped
+@ViewScoped
 @ManagedBean
 public class PollDemoBean implements Serializable {
     private static final long serialVersionUID = 1L;
 
     private int counter=0;
+
+	private boolean stop;
 
 	public Date getCurrentTime() { return new Date(); }
 
@@ -24,6 +25,14 @@ public void setCounter(int counter) {
 		this.counter = counter+1;
 	}
 
+	public boolean isStop() {
+		return stop;
+	}
+
+	public void setStop(boolean stop) {
+		this.stop = stop;
+	}
+
 	public void listener(ActionEvent event) {
 //		System.out.println("Poll called me");
 	}

src/main/webapp/forms/PollAttributes.xhtml

@@ -47,11 +47,6 @@
                 <td>(none)</td>
                 <td>How often is the poll action to be called? Denotes the number of milliseconds between polls. Default value is 1000.</td>
             </tr>
-            <tr>
-                <td>once</td>
-                <td>(none)</td>
-                <td>If true, the poll is called only once. Default value: false.</td>
-            </tr>
             <tr>
                 <td>rendered</td>
                 <td>false</td>