Changes magic sequence to '!#mojo ' and strips 'mojo ' when building url

examples/js/wget.js

-#!mojo:js_content_handler
+#!mojo mojo:js_content_handler
 // Demonstrate use of the Mojo network service to load a URL. To run this
 // application with mojo_shell, set DIR to be the absolute path for this
 // directory, then:
 //   mojo_shell "file://$DIR/wget.js http://www.google.com"
 // Substitute any URL for google.com. To keep the noise down, this app
 // only displays the number of bytes read and a little http header info.
 
 define("main", [
   "console",
   "mojo/services/public/js/application",
@@ skipping 39 matching lines @@
           })
           .then(function() {
             app.quit();
           });
       });
     }
   }
 
   return WGet;
 });