Create readmdFrench.md
Create readmdFrench.md

French translation by @Lsuperman735
AnalysIR/Arduino-IRremote,z3t0/Arduino-IRremote,AnalysIR/Arduino-IRremote,shirriff/Arduino-IRremote,z3t0/Arduino-IRremote,YodaR10/Arduino-IRremote,Seeed-Studio/IRSendRev,YodaR10/Arduino-IRremote,Seeed-Studio/IRSendRev,shirriff/Arduino-IRremote