Added READMEs.

Author: dplassgit

README.md

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+# Arduino sketches
+
+A [PLASS] Program
+
+## To download
+
+git clone [email protected]:dplassgit/arduino.git
+
+## To upload
+
+git push origin trunk

keyboardv0/README.md

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+# Keyboard v0
+
+An Arduino sketch to retrieve serial binary from the Vector Graph 4 keyboard.
+
+After an active-low trigger, the first bit is skipped, then
+subsequent bits are shifted in LSB to MSB, for 7 bits.

logic_analyzer/README.md

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+# Keyboard v0
+
+An Arduino sketch to act like a logic analyzer.
+
+After an active-low trigger, bits are read until N consecutive 1s are seen.