add class for handling SUSEConnect configuration
achieve 100% test coverage
add SUSEConnect.yml fixture
load SUSE::Connect::Config class
read config and set attributes if no comand line arguments were passed
test client initialization with empty options
fix rubocop warnings
remove comment
remove debugger
remove path to test config file
rename SUSEConnect.yml to SUSEConnect
Merge pull request #72 from SUSE/review_140514_read_suseconnect_settings_from_yaml_file

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