removed localhost from config.js, added guessing of ES host

config.js

@@ -12,7 +12,11 @@ If you need to configure the default dashboard, please see dashboards/default
 */
 var config = new Settings(
 {
-  elasticsearch:  'http://localhost:9200',
+  // By default this will attempt to reach ES at the same host you have
+  // elasticsearch installed on. You probable want to set it to the FQDN of your
+  // elasticsearch host
+  elasticsearch:    "http://"+window.location.hostname+":9200",   
+  // elasticsearch: 'http://localhost:9200',
   kibana_index:     "kibana-int", 
   modules:          ['histogram','map','pie','table','stringquery','sort',
                     'timepicker','text','fields','hits','dashcontrol',