Add galaxy_design.md
Add galaxy_design.md

Kai-Zhang/galaxy,taotaowill/galaxy,taotaowill/galaxy,May2016/galaxy,szxw/galaxy,taotaowill/galaxy,ontologyzsy/galaxy,ontologyzsy/galaxy,szxw/galaxy,baidu/galaxy,ontologyzsy/galaxy,Kai-Zhang/galaxy,imotai/galaxy,Kai-Zhang/galaxy,ontologyzsy/galaxy,baidu/galaxy,imotai/galaxy,May2016/galaxy,sdgdsffdsfff/galaxy,imotai/galaxy,imotai/galaxy,sdgdsffdsfff/galaxy,sdgdsffdsfff/galaxy,May2016/galaxy,sdgdsffdsfff/galaxy,sdgdsffdsfff/galaxy,szxw/galaxy,ontologyzsy/galaxy,szxw/galaxy,szxw/galaxy,baidu/galaxy,imotai/galaxy