Weather Underground binding follow-up (#3852)
Weather Underground binding follow-up (#3852)

* adding karaf feature
* adding it to the bindings feature
* adding it to the docu navigation

Signed-off-by: Simon Kaufmann <fe80eec60aa78958d679ac47c8294c008a65d46f@googlemail.com>
plamen-peev/smarthome,S0urceror/smarthome,AchimHentschel/smarthome,Snickermicker/smarthome,S0urceror/smarthome,Snickermicker/smarthome,AchimHentschel/smarthome,plamen-peev/smarthome,plamen-peev/smarthome,AchimHentschel/smarthome,Snickermicker/smarthome,S0urceror/smarthome,vkolotov/smarthome,plamen-peev/smarthome,vkolotov/smarthome,vkolotov/smarthome,AchimHentschel/smarthome,vkolotov/smarthome,Snickermicker/smarthome,S0urceror/smarthome