313259 Rails Facebook Application

I need experience and expert Rails programmer. I am looking for modification to the existing code of an application I have. Code will be provided for you to work off of. [login to view URL] Here are what I need to add to my project: 1) Add the rating system (ex. Star 1 - 5) [login to view URL] 2) Add profile button 3) Add error checking (check if input right location, product, address, feedback, etc..) - need to be user friendly error message I need this to be done within 2-3 days.