about call
Merge branch 'develop' of https://github.com/easemob/sdkexamples-ios into develop

# By dujiepeng (2) and jifang1218 (1)
# Via dujiepeng
* 'develop' of https://github.com/easemob/sdkexamples-ios:
  添加友盟静态库
  update 打开友盟
  update log.