xcode7 “Application Transport Security has blocked a cleartext HTTP (http://) resource ”的解决

Xcode7关于错误的解决:
Application Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your
app's Info.plist file.

原因：Xcode7要求App内访问网络请求，要采用
HTTPS 协议，使用 TLS1.2 SSL加密请求数据。在info.plist加入下面字段后意思是任然使用之前不安全的访问方式

在plist中添加以下代码:
<key>NSAppTransportSecurity</key>
    <dict>
       <key>NSAllowsArbitraryLoads</key>
       <true/>
    </dict>