* version 0.1.1

* Add FormatStream class
* Change all tabs to spaces
* Improvement error handling to JsonStream

 * added a strerror method
 * fixed number token
* seperate a implement of JsonTokenizer
* fixed a code of JsonTokenizer
* applying the generated error message with FormatStream to JsonTokenizer.
* Modified from FormatStream to FormatString, a code modified too.

* add test code for Error No.