This library is now part of google_drive gem: github.com/gimite/google-drive-ruby
For new code: I suggest to use google_drive gem directly.
For existing code: You can keep using google-spreadsheet-ruby gem. Now google-spreadsheet-ruby is a library which simply does:
require "google_drive" GoogleSpreadsheet = GoogleDrive
and it provides the same API as before.
Note that gimite-google-spreadsheet-ruby at gems.github.com is no longer updated, because github stopped hosting it.
API document: gimite.net/doc/google-drive-ruby/
Hiroshi Ichikawa - gimite.net/en/index.php?Contact