Created setup (markdown)

setup.md

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+### Initial setup
+
+This is very crude for now. It needs to be smart and automated.
+
+* Create two folders `known` and `unknown`
+* Create some images in each of these folders. For example:
+
+```
+convert -fill blue -pointsize 72 label:k1 known/k1.png
+convert -fill blue -pointsize 72 label:k2 known/k2.png
+convert -fill blue -pointsize 72 label:u1 unknown/u1.png
+```
+
+* Create a font folder and put some fonts in it:
+
+```
+mkdir -p lib/fonts/medium/
+cp <<some.ttf>> lib/fonts/medium/
+```