Using .siblings() instead of next()

The plugin currently looks for $elem.next() - when validation (or any other scripts) insert a new element (such as an error label) next to the <textarea> it breaks the plugin.  Searching for $elem siblings with the counterCssClass will fix this.

jquery.charactercounter.js

@@ -87,7 +87,7 @@
         function checkCount(element)
         {
             var characterCount = $(element).val().length;
-            var counter = options.counterSelector ? $(options.counterSelector) : $(element).next("." + options.counterCssClass);
+            var counter = options.counterSelector ? $(options.counterSelector) : $(element).siblings("." + options.counterCssClass);
             var remaining = options.limit - characterCount;
             var condition = remaining < 0;