bump version to 3.5

Author: delabiejochen

src/main/java/com/testingbot/tunnel/App.java

@@ -28,7 +28,7 @@
 import org.eclipse.jetty.util.log.JavaUtilLog;
 
 public class App {
-    public static final Float VERSION = 3.4f;
+    public static final Float VERSION = 3.5f;
     private Api api;
     private String clientKey;
     private String clientSecret;