[Review] Request from 'vlewin' @ 'SUSE/connect/review_140514_read_suseconnect_settings_from_yaml_file'

Please review the following changes:
  * 3d03602 fix rubocop warnings
  * 082b4ae test client initialization with empty options
  * 60ca312 read config and set attributes if no comand line arguments were passed
  * cd6b4b9 load SUSE::Connect::Config class
  * da3e9ba add SUSEConnect.yml fixture
  * b93505a achieve 100% test coverage
  * c5224fb add class for handling SUSEConnect configuration