Update wording on token storage

Author: Kadi Kraman

docs/token-storage.md

@@ -1,10 +1,10 @@
 ## Token Storage
 
-Once the user has successfully authenticated, you'll have a JWT and possibly a refresh token that need to be stored securely.
+Once the user has successfully authenticated, you'll have a JWT and possibly a refresh token that should be stored securely.
 
 ❗️ __Do not use Async Storage for storing sensitive information__
 
-Async Storage is the simplest method of persisting data across application launches. However, it is _unencrypted_ key-value store and so should not be used for token storage.
+Async Storage is the simplest method of persisting data across application launches in React Native. However, it is an _unencrypted_ key-value store and should therefore not be used for token storage.
 
 ✅ __DO use Secure Storage__
 
@@ -16,11 +16,11 @@ Keychain Services allows you to securely store small chunks of sensitive info fo
 ### Android - Secure Shared Preferences
 Shared Preferences is the Android equivalent for a persistent key-value data store. Data in Shared Preferences is not encrypted by default. Encrypted Shared Preferences wraps the Shared Preferences class for Android, and automatically encrypts keys and values.
 
-In order to use iOS Keychain services or Android Secure Shared Preferences, you either can write a bridge yourself or use a library which wraps them for you and provides a unified API at your own risk.
+In order to use iOS Keychain services or Android Secure Shared Preferences, you can either write a bridge yourself or use a library which wraps them for you and provides a unified API (at your own risk).
 
 ## Related OSS libraries
 
+- [react-native-keychain](https://github.com/oblador/react-native-keychain)
 - [react-native-sensitive-info](https://github.com/mCodex/react-native-sensitive-info)
 - [redux-persist-sensitive-storage](https://github.com/CodingZeal/redux-persist-sensitive-storage)
-- [react-native-keychain](https://github.com/oblador/react-native-keychain)
 - [rn-secure-storage](https://github.com/talut/rn-secure-storage)