docs(interface):update readme

README.md

@@ -25,6 +25,7 @@ This React Native bridge supports React Native app builds with version `0.61.5`
     - [Submit the results of the form](#submit-the-results-of-the-form)
     - [Feedback submission callback](#feedback-submission-callback)
   - [Custom Variables](#custom-variables)
+  - [Localization](#localization)
   - [Installation steps for React Native without Auto-Linking](#installation-steps-for-react-native-without-auto-linking)
     - [Android](#android-1)
     - [iOS](#ios-1)
@@ -357,6 +358,23 @@ Trying to set an invalid object as a custom variable will result in that object
 
 Custom variables are added as extra feedback data with every feedback item sent by the SDK, whether from a passive feedback or a campaign.
 
+## Localization
+
+For all the text that is not customizable in the web interface, you can provide your own translation using a .string localized file inside your application.
+
+This file also includes all the accessibility labels read when VoiceOver is enabled.
+
+### iOS
+
+```
+ usabilla.loadLocalizedStringFile("YOUR_LOCALIZED_STRING_FILENAME'");
+```
+
+**NOTE**: This method accepts as parameter a valid String file name and available only for ios.
+To read more about localisation in ios [follow here](https://github.com/usabilla/usabilla-u4a-ios-swift-sdk#localization)
+
+To read more about localisation in android [follow here](https://github.com/usabilla/usabilla-u4a-android-sdk#localization)
+
 ## Installation steps for React Native without Auto-Linking
 
 The installation of this SDK consists out of two parts, one part for your projects a whole and the second part for iOS(#ios) and Android(#android) specifically. To install the Usabilla SDK into your React Native Application: