Add status messages

[BoelD]

Some 'cosmetic' changes:

Maybe in a next version you can add a few extra status messages. When I first started the gateway, it seemed it wasn't responding, but then I realised it just couldn't find the wifi network. A message telling that the device is trying to connect to the network would be nice.

Same for the radio module: the software does tell you when an unknown radio is found, but not when a known radio is found. Same confusion: I thought the module had freezed, but it actually worked like a charm.

[JaapBraam]

Feel free to add those status messages and make a pull request ;-)

[BoelD]

Good point. :) When I have more time I can do it. At this moment I have no experience with programming Lua, but when I look at the code it cannot be very difficult to add those lines in the right places.