add ability to close connections
condense walk_attributes
Added CupsPrinter#get_all_printer_attrs

- add ability to get all attributes for all printers from a print server
remove duplicate dependency in gemspec

it was throwing a warning
Merge pull request #15 from kbrock/close_method

Thanks for the cleanup.
Merge pull request #16 from kbrock/fix_dependency

Good catch.
Bump gem version.
Support for retrieving jobs.  #14
Another version bump