Add MatchX setup docs.

Author: brocaar

docs/content/install/gateway/_index.md

@@ -14,6 +14,7 @@ menu:
 Instructions are available for the following vendors:
 
 * [Kerlink]({{<relref "kerlink.md">}})
+* [MatchX]({{<relref "matchx.md">}})
 * [Multitech]({{<relref "multitech.md">}})
 
 For Raspberry Pi / Rasbian based gateways, please refer the

docs/content/install/gateway/matchx.md

@@ -0,0 +1,32 @@
+---
+title: MatchX
+menu:
+    main:
+        parent: gateway
+---
+
+## MatchX
+
+### Matchbox gateway
+
+The [MatchX Matchbox](https://matchx.io/hardware#matchboxs) is an OpenWRT / Lede
+base gateway, which by default sends its data to the MatchX hosted network-server
+(which is based on the LoRa Server software). By default it connects to the MatchX
+backend over a VPN connection.
+
+To connect the gateway to your own environment:
+
+* Power on the gateway and follow the MatchX provided manual to setup the
+  wifi connection (in case needed).
+
+* Create a MatchX account and register the gateway.
+
+* On the page with the gateway details is a button **Global LoRa Config: [Edit Config]**.
+  click on this button and scroll down to the bottom where you find the
+  `server_address` setting. Change this to the IP or hostname on which
+  your LoRa Gateway Bridge instance is listening for UDP packets.
+
+**Note:** Running the LoRa Gateway Bridge on the gateway itself will probably
+not work without re-compiling the kernel with FPU emulation. This has not been
+tested. In order to get `root` access, you need to contact the MatchX support
+for getting the password.