title: init and awakeFromNib
body: <p>I'd like understand why if i try to set value (I.e. setAlphaValue or setTitle) for an object (like a NSButton) in init method nothing happen, but if i call setter function in awakeFromNib it works correctly. </p>
  
  <pre><code>@interface appController : NSObject {
      NSButton *btn;
  }
  @end;
  
  @implementation appController
  -(void)awakeFromNib {
     //it works
     [btn setTitle:@"My title"];
  }
  
  -(id)init { 
      self = [super init];
      if(self){
          //it doesn't works
          [btn setTitle:@"My title"];
      }
  }
  @end
  </code></pre>