Change Default value for texture size & smart-size
Change Default value for texture size & smart-size

Squashed commit d14db9aa2e423e1bad9ab6fa820aaffbf96e2ad0
Author: Shen Yiming <9d17749a340a2ff16dfb96f1e7a8f8d5da4f764f@163.com>
Date:   Fri Jun 29 13:23:03 2018 +0800
Change Default value for texture size & smart-size

soimy/msdf-bmfont-xml,soimy/msdf-bmfont-xml