For a given view, applies horizontal movement for offset and duration.

moveViewHorizontally:duration:forOffset

- (void) moveViewHorizontally:(UIView *)view duration:(float)duration forOffset:(float)offset
{
    [UIView animateWithDuration:duration
                          delay:0.0
                        options: UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse
                     animations:^{
                         view.center = CGPointMake(view.center.x + offset, view.center.y);
                     }
                     completion:NULL];
}