AOPEventTracking

a simple example for umeng analytics. Use annotation to send custom event

```java @ActivityResume @Override protected void onResume() { super.onResume(); }

@ActivityPause
@Override
protected void onPause() {
    super.onPause();
}

@EventTracking(eventId = "login")
private void login() {
    Toast.makeText(this, "login", Toast.LENGTH_SHORT).show();
}

@EventTracking(eventId = "share", keys = {"share_type", "share_uri"}, values = {"pic", "https://XXX"})
private void share() {
    Toast.makeText(this, "share", Toast.LENGTH_SHORT).show();
}

```java
    @PageResume(pageName = "DummyFragment")
    @Override
    public void onResume() {
        super.onResume();
    }

    @PageResume(pageName = "DummyFragment")
    @Override
    public void onPause() {
        super.onPause();
    }