add the download link for 1.4.1 fw (#417)

docs/_pages/versions.md

@@ -31,6 +31,14 @@ last_modified_at: 2018-01-09
 * Special thanks to [capfish](https://github.com/capfish) , [Adamantinu](https://github.com/Adamantinu) and [Chris Lovett](https://github.com/lovettchris), thank you for your contributions and feedbacks.
 
 
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+### Downloads
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+- [Firmware 1.4.1](https://azureboard2.azureedge.net/prod/devkit-firmware-1.4.1.65.bin).
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+
 ## Version 1.4.0 (July 19, 2018)
 
 ### Release Summary