37_harmony.pm: added channel command


git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6830 2b470e98-0d58-463d-a4d8-8e2adae1ed80
MAX: Verbose help text (thanks to mattwire)

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6831 2b470e98-0d58-463d-a4d8-8e2adae1ed80
WMBUS: new reading value_type

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@6832 2b470e98-0d58-463d-a4d8-8e2adae1ed80