fix(autocomplete): Fix autocomplete navigation when maxResultsToShow …

…is set

The maxResultsToShow option is implemented using the limitTo filter, which
limits the number of items to be rendered but doesn't prevent the keyboard
navigation from selecting invisible items.

Closes #109

src/auto-complete.js

@@ -62,7 +62,9 @@ tagsInput.directive('autoComplete', function($document, $timeout, $sce, tagsInpu
                     }
 
                     items = makeObjectArray(items.data || items, options.tagsInput.displayProperty);
-                    self.items = getDifference(items, tags);
+                    items = getDifference(items, tags);
+                    self.items = items.slice(0, options.maxResultsToShow);
+
                     if (self.items.length > 0) {
                         self.show();
                     }

templates/auto-complete.html

@@ -1,7 +1,7 @@
 <div class="autocomplete" ng-show="suggestionList.visible"> 
   <ul class="suggestion-list">
     <li class="suggestion-item"
-        ng-repeat="item in suggestionList.items | limitTo:options.maxResultsToShow track by track(item)"
+        ng-repeat="item in suggestionList.items track by track(item)"
         ng-class="{selected: item == suggestionList.selected}"
         ng-click="addSuggestion()"
         ng-mouseenter="suggestionList.select($index)"