Without smooth (false) setCurrentItem works ugly

Without smooth (false) setCurrentItem works ugly

`mSlider.setCurrentItem(position, false);`

For example _ZoomOutSlide_ animation won't be finished (it just freezed at its start)

```
public void setCurrentPosition(int position, boolean smooth) {

Log.i("AGAG", mViewPager.getCurrentItem() + " " + position);

if (mViewPager.getCurrentItem() == position) return;

if (getRealAdapter() == null)
throw new IllegalStateException("You did not set a slider adapter");
if (position >= getRealAdapter().getCount()){
throw new IllegalStateException("Item position is not exist");
}
int p = mViewPager.getCurrentItem() % getRealAdapter().getCount();
int n = (position - p) + mViewPager.getCurrentItem();
mViewPager.setCurrentItem(n, smooth);
}
```