环境：
Xcode version: 6.4
步骤：
1. 下载官方提供的LeanStorageDemo
2. 通过cocoapod安装AVOSCloudUI
3. 调用AVSignUpViewController
4. 在模拟器（iPhone 6）以及真机（5s & iPad 4）上都报错
结果：
选择模拟器时的错误（真机错误类似，只是architecture不同）：
ld: warning: ignoring file /Users/zoe/Develop/Work/IntelliCar/demos/LeanStorageDemo-iOS/LeanStorageDemoObjC/Pods/AVOSCloudUI/iOS/release-v2.1.2/AVOSCloudUI.framework/AVOSCloudUI, missing required architecture x86_64 in file /Users/zoe/Develop/Work/IntelliCar/demos/LeanStorageDemo-iOS/LeanStorageDemoObjC/Pods/AVOSCloudUI/iOS/release-v2.1.2/AVOSCloudUI.framework/AVOSCloudUI (3 slices)
Undefined symbols for architecture x86_64:
"OBJCCLASS_$_AVSignUpViewController", referenced from:
objc-class-ref in DemoListC.o
ld: symbol(s) not found for architecture x86_64
另外想问一下，LeanCloud有没有提供AVOSCloudUI的demo或是相关的文档？