Update README
Update README
Merge remote-tracking branch 'topi/master'
RFID_reader

This is the reader for RFID-card
Update rfid_reader.cpp
Added initial tablemodel.sql.
Merge remote-tracking branch 'tommi/master'
Inventaarin kansiorakenteet kunnossa

Yhdistetty Pekan, Topin ja Tommin tuotokset yhteen