From f1e94b5a1aeef11f45619d51da9296d8c7ea04d0 Mon Sep 17 00:00:00 2001
From: Adrian Zankich <adrian@hybridgroup.com>
Date: Wed, 3 Dec 2014 10:59:19 -0800
Subject: [PATCH] Account for devices which are not commanders

---
 device.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/device.go b/device.go
index b584f8ef..ed7045da 100644
--- a/device.go
+++ b/device.go
@@ -25,8 +25,10 @@ func NewJSONDevice(device Device) *JSONDevice {
 	if device.Connection() != nil {
 		jsonDevice.Connection = device.Connection().Name()
 	}
-	for command := range device.(Commander).Commands() {
-		jsonDevice.Commands = append(jsonDevice.Commands, command)
+	if commander, ok := device.(Commander); ok {
+		for command := range commander.Commands() {
+			jsonDevice.Commands = append(jsonDevice.Commands, command)
+		}
 	}
 	return jsonDevice
 }