部署xamarin.forms android时报错：
AndroidPropertiesAndroidManifest.xml : warning XA0101: @(Content) build action is not supported
解析方法：
把AndroidManifest.xml文件的高级属性里的文件生成操作改为“无”。
It's a warning that came with the new Xamarin Update. If you want to get rid of it, change the Build Action for AndroidManifest.xml to "none".
http://stackoverflow.com/questions/30324099/xamarin-build-action-warning-xa0101