【iOS】Signing for requires a development team. Select a development team in the project editor. Code
報錯信息：Signing for "demo1_greating" requires a development team. Select a development team in the project editor.
Code signing is required for product type 'Application' in SDK 'iOS 10.0'
解決方法：單擊工程名 -》Signing -》 Team -》 選擇對應的Account（如果沒有Account，需要主動創建一個）
主動添加Account的方法請參考http://www.liuchuo.net/archives/284