Initial commit of Wemo Binding for openHAB 1.x

This is a new implementation of a binding for Belkin's Wemo-Switch.
Information on how to setup the binding can be found in the included readme.md (prepared WIKI page).

Please feel free to comment !

Regards
Hans-Jörg
this member doesn't seem to be used anywhere? Couldn't it be deleted? We should really avoid saving states in bindings.