[Review] Request from 'vlewin' @ 'SUSE/connect/review_140408_complete_successful_system_registration_feature'

Please review the following changes:
  * 38acc02 complete system registration feature
  * 11fb4ed clean up and add more integration steps
  * 19ce47e increase aruba io wait time for slow processes
  * aca59f6 add step helper
  * af53c71 Merge pull request #39 from SUSE/review_140407_update_rubocop
  * 4bbead8 Update README.md
  * 91a0967 Merge pull request #40 from SUSE/review_140407_update_yast_comment
  * fd9a629 Remove obsolete comments in YaST wrapper.
  * 95b0c87 Fix exist method stubbing
  * 4b23baa Upgrade code to be compartible with new rubocop cops
  * 1650c06 Update rubocop gem