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

# By xieyajie (15) and others
# Via xieyajie (4) and jifang1218 (2)
* 'develop' of https://github.com/easemob/sdkexamples-ios: (25 commits)
  update
  update
  dismiss warnings.
  dismiss warnings.
  update lib voice
  fix iOS 6 crash
  update SDWebImage
  update: localNotification.soundName = UILocalNotificationDefaultSoundName;
  no message
  update:更新chatList头像设置
  remove sdwebimage.framework
  update:sdwebimage
  update:行高
  update:添加设置行间距
  add call ring
  add unit test
  call view && unit test && database
  update
  update call
  new project demo3.0
  ...