Objective-C programmer required for a class integrating with facebook graph api

I’d like a class written in objective-C to make using facebook graph api a lot simpler. (Not the iOS framework). I have an implementation that works but this has some annoying little bugs in it, best to have someone who knows what they’re doing help out.
I’m attaching 3 tutorials that I want you to extract the existing code to create this class.

Methods required in the class:
-----------------------------
1. “Create”. This is a public static method. Will return the instance of the class.
this does init/alloc etc and creates a hidden UIWebview and a “Cancel” button.
It takes the following parameters:
NSString *appId, NSString *permissions, and UIViewController *mainController

2. “isUserLoggedIn”. A public instance method.
returns YES / NO if a user is logged in

3. “showLogInWebView” . A public instance method.
animates and shows the login window so user can log in

4. “postToWall” . A public instance method.
Has the following params
NSString *szTitle, NSString *szDescription, NSString *szWebIcon, and NSString *szWebLink


Notes and further requirements:
- pls submit the class with a working sample project for testing
- everything should be as simple as possible, no unnecessary/complex code (so other people can understand what you’ve written)
- everything must be done programmatically (no XIBs in the class please)
- The class should expose those public methods ONLY.
- It can have as many private methods, delegates etc as required, so long as it works, but again keep this minimal/simple. It doesn’t need to know anything about the current app, except for the UIViewController so that it can show/hide the login page.

Pls only bid if you can complete all the above.

Any questions, pls ask

Thanks for reading.