android: add more information to the readme, to use as a guide

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Sigrid Solveig Haflínudóttir 2022-01-04 23:51:18 +01:00
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This is a working port of Uxn to run on Android.
## Guide
To get a proper on-screen keyboard, install "Hacker's Keyboard"
from Google Play. Use it naturally, as you would use a physical keyboard,
including pressing and holding modifiers (Ctrl, Alt, etc) with letters
if a ROM requires it (like Noodle, to load or save an image).
Tapping anywhere outside of ROM screen area will toggle the keyboard.
`F4` will invoke "boot" ROM, which displays all the ROMs available for loading,
including those you once downloaded with a browser and then opened using Uxn.
## Building yourself
Easiest way to start is to install JDK first, then [Android