RC522 RFID project

@Turgut is going through all the projects at the moment to correct the mistakes in the ebook. It could take a couple of weeks since it is a big undertaking.

@John_Maloney wrote in another post:

"The PicoBricks ebook was written by two Turkish teachers who were not familiar with MicroBlocks when they started the project. The current draft has some issues, both with the code and the explanations. Turgut has volunteered to edit the book and is working through the 25 projects as fast as he can."