Create README.md

StackRduino · web-flow · commit 80de99334ae2 · 2020-12-15T20:27:53.000+08:00
diff --git a/Arduino/README.md b/Arduino/README.md
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+# StackRduino M0 Arduino IDE Setup
+## Repository for storing Arduino related files and custom board definition.
+
+Copy and paste the following URL into the File > Preferences > "Additional Boards Manager" textbox.
+```
+https://raw.githubusercontent.com/StackRduino/StackRduino_M0/master/Arduino/package_StackRduino_index.json
+```
+Make sure to also install the Arduino SAMD Library at the same time.
+
+Boards > "Add board definition" > Search for "StackRduino Boards" > Install Robo HAT Library
+
+Boards > "Add board definition" > Search for "SAMD" > Install Arduino SAMD Library
