Add a README file

codelast · codelast · commit 55f69b175f7b · 2015-10-31T21:13:05.000+08:00
diff --git a/gpio/README.md b/gpio/README.md
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+Some applications based on RPi's GPIO ports.
+
+****
+

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 +Some applications based on RPi's GPIO ports.
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 +****
++