add map-controller library

The library can control Google Maps v2 easily.

Like following example.

```java
LatLng latLng = new LatLng(25.03338, 121.56463);

mc.animateTo(latLng, new ChangePosition() {
    @Override
    public void changed(GoogleMap map, CameraPosition position) {
        Toast.makeText(ShowSpecificLocation.this, position.toString(), Toast.LENGTH_SHORT).show();
    }
});
```

```java
mc.startTrackMyLocation(new ChangeMyLocation() {
    @Override
    public void changed(GoogleMap map, Location location) {
        Toast.makeText(TrackingMyLocation.this, location.toString(), Toast.LENGTH_SHORT).show();
    }
});
```