A simple wrapper for http://www.whoisxmlapi.com/. There isn't much to the actual Whois API, but this might save someone a few minutes. I've tested it in Ruby 1.8.6 and 1.8.7.

Example:

    require 'whois_api_wrapper'
    require 'hpricot'
    
    USERNAME = 'andrewlat'
    PASSWORD = 'secret'
    
    whois = WhoisApiWrapper.new(USERNAME, PASSWORD)
    response = whois.request_whois('http://github.com')
    doc = Hpricot(response.body)
    
    expiration_date = (doc / 'expiresdate')
    nameservers = (doc / 'nameservers')
    
    # ...