Update README.md

Author: Niko-r

README.md

@@ -32,6 +32,22 @@ Teads SDK is available on Cocoapods. Add `TeadsSDK` to your `Podfile
 pod 'TeadsSDK'
 ```
 
+#### App Transport Security
+
+Even if Teads SDK if fully compliant with iOS 9 network restrictions (SSL ready), third party ad servers don't all use SSL yet. This is why we highly recommend to allow non-ssl connexions until all ad servers and tracking vendors are ssl compliant too.
+
+You should add the NSAppTransportSecurity exception with NSAllowsArbitraryLoads exception to plist:
+
+![AppTransportSecurity](AppTransportSecurity.png)
+
+```xml
+<key>NSAppTransportSecurity</key>
+<dict>
+    <key>NSAllowsArbitraryLoads</key>
+    <true/>
+</dict>
+```
+
 ## Changelog
 
 Read [changelog here](https://github.com/teads/TeadsSDK-iOS/blob/master/CHANGELOG.md).