public void setMarkerPaddingBottom(int markerPaddingBottom) {
        mMarkerPaddingBottom = markerPaddingBottom;
        initTimeline();
    }
Sets marker bottom padding
@param markerPaddingBottom the bottom padding to marker, works only in horizontal orientation
timelineview/src/main/java/com/github/vipulasri/timelineview/TimelineView.java