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
i would suggest to rename "soapCall" to "soapMethod" … you could also think about a different "wemoCall" message specific to certain methods. The goal should be to minimise cluttering the SOAP pieces over the code.