CHANGES IN VERSION 0.0.5
------------------------
 o add examples in geom_scatterpie <2016-12-02, Fri>
 o recenter to set the center of map data <2016-12-01, Thu>
 o geom_scatterpie_legend <2016-12-01, Thu>
 o geom_scatterpie <2016-11-30, Wed>