log4js support
including --verbose option.
log will output to crowdutil.log as well as the console.
update documentation about verbose option
added logConfig to the crowdutil.json setting file
bug and documentation fix.
* CHANGE: changed log category name from main to crowdutil
* FIXED: initLogger was not handed over with cfg but was referenced.
Merge pull request #7 from koma75/develop

merging log4js feature