Convert Small PHP Class to Ruby

I need a Ruby/Rails Class for the MailChimp API. MailChimp provides a VERY simple API in the form of a PHP Class. I've attached the API document. I'd like a Ruby/Rails Class that lets me subscribe or unsubscribe from MailChimp. Additionally, when subscribing, it should be possible (as per the API document) to pass in a Hash Table of optional values. Both methods should gracefully handle any exceptions that are returned. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform N/A