Merge pull request #382 from dalegrover/add_seeeduino_xiao

Add seeeduino xiao

Author: makermelissa

_board/seeeduino_xiao.md

@@ -0,0 +1,18 @@
+---
+layout: download
+board_id: "seeeduino_xiao"
+title: "Seeeduino XIAO Download"
+name: "Seeeduino XIAO"
+manufacturer: "SEEED"
+board_url: ""
+board_image: "seeeduino_xiao.jpg"
+---
+
+The SEEED Seeeduino XIAO is a minimal, low-cost board that uses the Atmel ATSAMD21G18, a 32-bit ARM Cortex-M0+ processor with 256KB flash and 32KB SRAM running at 48MHz.  The board is 20 x 17.5mm, and uses a USB-C connector.
+
+## Purchase
+* [Seeed](https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html)
+
+## Contribute
+
+Have some info to add for this board? Edit the source for this page [here](https://github.com/adafruit/circuitpython-org/edit/master/_board/{{ page.board_id }}.md).