//import the header
#import "NSObject+Stalker.h"

// observe the property 'count' for the object spoons
[self.stalker whenPath:@"count"
       changeForObject:spoons
               options:NSKeyValueObservingOptionNew 
                  then:^(id object, NSDictionary *change) {

               }];

// listen to the notification UIApplicationDidBecomeActiveNotification
[self.stalker when:UIApplicationDidBecomeActiveNotification 
              then:^(NSNotification *notification) {

}];