Commands for flipping the external monitor out

These work on my laptop:

```
# Turn on the VGA output, mirroring the laptop display
xrandr --output VGA1 --same-as LVDS1

# Set resolution to 1280x1024
xrandr --output LVDS1 --mode 1280x1024

# Flip VGA output in the y direction
xrandr --output VGA1 --reflect y
```
