Example: Instagram

[[NXOAuth2AccountStore sharedStore] setClientID:@"clientID"
                                         secret:@"clientSecret"
                                          scope:[NSSet setWithObjects:@"likes", @"relationships", @"comments", nil]
                               authorizationURL:[NSURL URLWithString:@"https://api.instagram.com/oauth/authorize"]
                                       tokenURL:[NSURL URLWithString:@"https://api.instagram.com/oauth/access_token"]
                                    redirectURL:[NSURL URLWithString:@"myapp://instagram-callback"]
                                 forAccountType:@"Instagram"];