Put card10exchange _index.md

1daa4436 · miriamino · 9e6f2b9a · 1daa4436
Commit 1daa4436 authored Dec 14, 2019 by miriamino
--- a/_index.md
+++ b/_index.md
@@ -10,6 +10,9 @@ No sale of card10s!
 It is very easy to [update your card10 firmware](/en/firmwareupdate) with just a USB-C cable. The update instructions
 also contain a list of the existing firmware releases.

+## Got a card10 you don't use or need one for your next project?
+The card10 exchange point is [here](/en/card10exchange)
+
 ## Meet with other card10 hackers at the card10 workout in Berlin
 We will meet up for the second card10 workout at [xHain](https://x-hain.de/en/page/about/) in Berlin on the weekend from November
 9th to 10th!  More info [here](/en/workouts/berlin-2019-11-09).