added logging support
renamed logger config to wraith_logger.yaml
Merge branch 'master' into logger

Conflicts:
	Gemfile.lock
	lib/wraith.rb
	lib/wraith/cli.rb
	lib/wraith/crop.rb
	lib/wraith/spider.rb
	lib/wraith/version.rb
logger fix
config after load
mkdir_p
Merge branch 'master' into logger

Conflicts:
	lib/wraith/images.rb
	lib/wraith/version.rb
version