I got stuck in the place where is says In the " “boards.txt” file, change the “upload.tool” entries to the
appropriate value for your setup."
Can anyone help me with this please?
Not sure what your trying to do there with all that changing of files but here is a pretty good tutorial explaining how burn arduino code to an attiny or atmega. http://playground.arduino.cc/Learning/AtmegaStandalone
I think you are talking about this part of the boards.txt
Just uncomment the programmer you are using, in this example I'm using ArduinoISP
# The following DO work (pick one)...
attiny85at16e.upload.using=arduino:arduinoisp
# attiny85at16e.upload.protocol=avrispv2
# attiny85at16e.upload.using=pololu
you dont need the programmer connecting to arduino here is a guide to solve everything
all the steps are there just connect as it says and you can program