SDK-614
创建群组页面修改
fix xcode6 ios8 beta2.
接口替换
Merge branch 'develop' of https://github.com/easemob/sdkexamples-ios into develop

# By jifang1218
# Via jifang1218
* 'develop' of https://github.com/easemob/sdkexamples-ios:
  fix xcode6 ios8 beta2.
no message
change present view controller to present movie player view controller for video message type.
Merge branch 'develop' of https://github.com/easemob/sdkexamples-ios into develop

# By jifang1218
# Via jifang1218
* 'develop' of https://github.com/easemob/sdkexamples-ios:
  change present view controller to present movie player view controller for video message type.
bugfix for SDK-631
ios 最后一条发的是位置消息，但是消息列表显示是【视频】

root cause:
missing break in switch statement. chatlist view controller.
in method subTitleMessageByConversation:

solution:
add missing break.
no message
Merge branch 'develop' of https://github.com/easemob/sdkexamples-ios into develop

# By jifang1218
# Via jifang1218
* 'develop' of https://github.com/easemob/sdkexamples-ios:
  bugfix for SDK-631 ios 最后一条发的是位置消息，但是消息列表显示是【视频】
no message
groupDetailViewController不进dealloc
no message
no message
SDK-553