Add .ruby-version
Test the 'show COOKBOOK VERSION' subcommand
Test the 'show COOKBOOK' subcommand
Test the 'list' subcommand
Test the 'share COOKBOOK CATEGORY' subcommand
Test the 'unshare COOKBOOK' subcommand
Test the 'search TERM' subcommand
Test the 'download COOKBOOK' subcommand
Add a note about the 'install COOKBOOK' subcommand
Move spec support classes/modules to lib