BUG FIX: Device API would return true instead of a device sometimes.

app/mutations/devices/create.rb

@@ -22,7 +22,6 @@ module Devices
         # Remove userless devices.
         old_device.destroy! if old_device && device.users.count < 1
       end
-
       device
     end
   private

app/mutations/devices/update.rb

@@ -10,7 +10,8 @@ module Devices
     end
 
     def execute
-      device.update_attributes inputs.except(:device)
+      device.update_attributes!(inputs.except(:device))
+      device
     end
   end
 end