Add connection error message

fixes #3

index.html

@@ -13,6 +13,9 @@
       <div ng-hide="connected">
         <form class="form-horizontal">
           <legend>Connection</legend>
+            <div class="alert alert-danger" ng-show="errorMessage">
+              <strong>Oh no!</strong> We cannot connect!
+            </div>
           <div class="control-group">
             <label class="control-label" for="hostport">Hostport</label>
             <div class="controls">

js/websockets.js

@@ -330,6 +330,9 @@ weechat.factory('connection', ['$rootScope', '$log', 'handlers', 'colors', funct
         }
 
         websocket.onerror = function (evt) {
+            if (evt.type == "error" && websocket.readyState == 0) {
+                $rootScope.errorMessage = true;
+            }
             $log.error("Relay error " + evt.data);
         }