Initial commit
	new file:   browser/mainwindow.cpp
	new file:   browser/mainwindow.h
	new file:   drivers/errors.h
	new file:   drivers/escposcommands.h
	new file:   drivers/escposprinter.cpp
	new file:   drivers/escposprinter.h
	new file:   drivers/iticketprinter.h
	new file:   drivers/itransport.h
	new file:   drivers/linuxusb.cpp
	new file:   drivers/linuxusb.h
	new file:   main.cpp
	new file:   posjsbrowser.pro
subiendo el codigo de la primera version del driver para la comunicacion con la impresora
Merge branch 'master' of https://github.com/Zimtronic/posjs