Added contributor.
Added contributor.
simon04/jfreechart,jfree/jfreechart,GitoMat/jfreechart,simon04/jfreechart,GitoMat/jfreechart,simon04/jfreechart,jfree/jfreechart,jfree/jfreechart,jfree/jfreechart,simon04/jfreechart,GitoMat/jfreechart,GitoMat/jfreechart