add a snapshot of ios client chat with unity. after more test. checked in soon.
add a snapshot of ios client chat with unity. after more test. checked in soon.

vikatory/kbengine_cocos2dx_demo,laiqiqi886/kbengine_cocos2dx_demo,cnsoft/kbengine_cocos2dx_demo,cnsoft/kbengine_cocos2dx_demo,vikatory/kbengine_cocos2dx_demo,laiqiqi886/kbengine_cocos2dx_demo