change where the delegate property is set

in the current implementation, the very first content view controller's
delegate property will not be set when its viewWillAppear: method
is called.

Objective-C/Onboard/OnboardingViewController.m

@@ -144,7 +144,13 @@ - (void)generateView {
         backgroundMaskView.backgroundColor = [UIColor colorWithWhite:0.0 alpha:kBackgroundMaskAlpha];
         [_pageVC.view addSubview:backgroundMaskView];
     }
-
+
+    // set ourself as the delegate on all of the content views, to handle fading
+    // and auto-navigation
+    for (OnboardingContentViewController *contentVC in self.viewControllers) {
+        contentVC.delegate = self;
+    }
+
     // set the initial current page as the first page provided
     _currentPage = [self.viewControllers firstObject];
 
@@ -198,12 +204,6 @@ - (void)generateView {
             }
         }
     }
-
-    // set ourself as the delegate on all of the content views, to handle fading
-    // and auto-navigation
-    for (OnboardingContentViewController *contentVC in self.viewControllers) {
-        contentVC.delegate = self;
-    }
 }
 
 - (void)handleAppEnteredForeground {