Use the Pi installer script, select N on having the console appear on the Pi, and say Y to mirroring HDMI. Then enable PIXEL using sudo raspi-config (boot to desktop)
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Its a good idea to safely turn off your Pi with a good sudo shutdown -h now but that often means pulling out a keyboard or connecting to the console. With our kernel we added a cool module that will let you turn any GPIO into a power button. Since there's a couple of tactile switches right there on the front, lets turn one into a power button. Press once to properly turn off the pi, press again to start it up. Isn't that nice?
We'll be using GPIO #23, the third button. You can use any of them or other GPIO but #23's our favorite number anyways.
Add rpi_power_switch to /etc/modules and save
Now create a new conf file or edit our existing one with
sudo nano /etc/modprobe.d/adafruit.conf
and enter in the line
options rpi_power_switch gpio_pin=23 mode=0
Of course, change the gpio_pin setting to some other # if you wish. mode=0 means its a pushbutton not a switch. If you happen to install an on/off switch, use mode=1
To make it active immediately run sudo modprobe rpi_power_switch