Porting Denon binding to OH2

[jwveldhuis]

Almost done:

Denon / Marantz 2.0 Binding

Just to let you know a new 2.0 binding is in the works for Denon / Marantz AVRs. Almost finished development work, hopefully it can be included in the OpenHAB 2.3.0 release. In the meantime you can download the jar file and place it into your addons directory. See https://github.com/openhab/openhab2-addons/issues/2204 for more details. Please let me know any feedback so I can try to incorporate it into the binding.