OCEventBus

an eventbus implementation for ios developer
#usage

1. import library

#import "NSObject+eventbus.h"

2. create event types

typedef enum{
    sample_event_user_login,
    sample_event_user_logout
} sample_event_t;

3. register event listenner

[self onEvent:sample_event_user_login cb:^(id sender,id ud){
    NSLog(@"sample event useradata:%@",ud);
}
``
4. post event 
```objc
[self postEvent:sample_event_user_login obj:nil];

5. unregister

[self unregisterEvent:sample_event_userlogin];