How to integrate FB iOS SDK 3.1.1 with application requests

I was looking for a reliable answer explaining how to save 3.1.1 in my project, but also implement the application request dialog. What I read says that I need to import Facebook.h and call it like [self.facebook dialog:@"apprequests" andParams:params andDelegate:self];, but when I import Facebook.h and comment #import <FacebookSDK/FacebookSDK.h>, I get conflicts with

[FBSession openActiveSessionWithReadPermissions:nil
                                              allowLoginUI:allowLoginUI
                                         completionHandler:^(FBSession *session,
                                                             FBSessionState state,
                                                             NSError *error) {
                                             [self sessionStateChanged:session
                                                                 state:state
                                                                 error:error];
                                         }];

Can someone help me on how I maintain my 3.1.1 SDK but also add apprequests? My goal is to select FB users and then send the application to join my application.

Thank,

Wes