fix to/toEnd: wrong argument error caused by shelljs

Author: az7arul

lib/string.js

@@ -670,7 +670,8 @@ string.js - Copyright (C) 2012-2014, JP Richardson <[email protected]>
       var name = names[i];
       var func = __nsp[name];
       try {
-        var type = typeof func.apply('teststring', []);
+        // #127: pass extra parameter to keep shelljs happy
+        var type = typeof func.apply('test', ['string']);
         retObj[name] = type;
       } catch (e) {}
     }