Shield code, OLED display works through shift register

Still to update: rotary encoder
Rotary Encoder for shield. Only push button works so far and updated LCD init

Updated LCD init to be more universal
Partial commit, deleted some files accidentally
Recovery of unsaved changes after deleting files
Removed directory brewpi-avr
project file changed
Merge branch 'recovery' into shield

Conflicts:
	brewpi_avr.atsuo
	brewpi_avr/Display.cpp
	brewpi_avr/RotaryEncoder.cpp
	brewpi_avr/TempControl.cpp
	brewpi_avr/brewpi_avr.cpp
	brewpi_avr/brewpi_avr.cppproj
	brewpi_avr/pins.h
	brewpi_avr/temperatureFormats.h
New precompiled binary
fixed fridge setting from web and OLED LCD compatibility
Merge branch 'shield' of https://github.com/BrewPi/brewpi-avr into shield

Conflicts:
	compiled_binaries/brewpi_avr_leonardo.hex
New precompiled binary for Leonardo
Fixed buzzer on Arduino UNO
Added precompiled binary for Arduino UNO
Lowered SPI clock frequency. High clock is not needed and lower clock is
better for longer cables.
updated README
Set waitForConversion to false for DallasTemperature in TempSensor:init()
Temperature sensor should now work asynchronously as intended. See
http://forum.brewpi.com/discussion/115/reducing-delays-increasing-responsiveness
Set slave select pin to output, so SPI cannot unintendedly switch to slave
New precompiled binaries for latest commit in SpiLCD
Merge branch 'shield'