fix and clean the new formatSearching() method. closes #301

select2.css

@@ -310,11 +310,8 @@ Version: @@ver@@ Timestamp: @@timestamp@@
 .select2-results .select2-highlighted em {
   background: transparent;
 }
-.select2-results .select2-no-results {
-  background: #f4f4f4;
-  display: list-item;
-}
-
+.select2-results .select2-no-results,
+.select2-results .select2-searching,
 .select2-results .select2-selection-limit {
   background: #f4f4f4;
   display: list-item;

select2.js

@@ -2196,7 +2196,7 @@
         formatInputTooShort: function (input, min) { return "Please enter " + (min - input.length) + " more characters"; },
         formatSelectionTooBig: function (limit) { return "You can only select " + limit + " items"; },
         formatLoadMore: function (pageNumber) { return "Loading more results..."; },
-	formatSearch: function () { return "Searching..."; },
+	    formatSearching: function () { return "Searching..."; },
         minimumResultsForSearch: 0,
         minimumInputLength: 0,
         maximumSelectionSize: 0,