add timestamps to recent commits, javadocs for JSONObject, JSONArray queryFrom() methods

JSONPointerException.java

@@ -27,6 +27,9 @@ SOFTWARE.
 /**
  * The JSONPointerException is thrown by {@link JSONPointer} if an error occurs
  * during evaluating a pointer.
+ * 
+ * @author JSON.org
+ * @version 2016-05-13
  */
 public class JSONPointerException extends JSONException {
     private static final long serialVersionUID = 8872944667561856751L;