Fixed #3830 - os list fails on ruby < 1.9
Merge pull request #54 from mbacovsky/3830_os_list

Fixed #3830 - os list fails on ruby < 1.9
Fixed #3818 - --puppetclass-ids in host create does not work
Merge pull request #56 from mbacovsky/3818_puppet_class_ids

Fixed #3818 - --puppetclass-ids in host create does not work
refs #3741 - usage exception handling
fixes #3743, #3744 - see more when listing collections and per_page settings

offer next pages on listing
interactive - text fixes related to interactive credentials