[ATtinyProgrammingShield] add blog ref
[ATtinyProgrammingShield] add blog ref

tardate/LittleArduinoProjects,tardate/LittleArduinoProjects,tardate/LittleArduinoProjects,tardate/LittleArduinoProjects,tardate/LittleArduinoProjects,tardate/LittleArduinoProjects,tardate/LittleArduinoProjects,tardate/LittleArduinoProjects