doc: update doc

Author: hmarques98

.DS_Store

@@ -121,9 +121,25 @@ You must be a member of the Apple Developer Program in order to enable Push Noti
 
 ![Instructions to add push notifications capability](https://i.stack.imgur.com/qsQTx.jpg)
 
-#### Customize notification appearance on Android
+### Setup OneSignal
 
-Starting Android 10 (API 29), notification icons should be glyphs. You need to follow this step to [customize the notification appearance](https://wix.github.io/react-native-notifications/docs/installation-android/#step-6-customize-the-appearance).
+1. You will need to have [OneSignal Account](https://app.onesignal.com/signup)
+2. Your OneSignal App ID, available in [Keys & IDs
+   iOS.](https://documentation.onesignal.com/docs/accounts-and-keys#section-app-id)
+
+3. IOS - [Generate an iOS Push Certificate.](https://documentation.onesignal.com/docs/generate-an-ios-push-certificate) You should generate a certificate after adding the Push Notification capability while setting up your iOS app.
+4. Android - [Generate a Google Firebase Server API Key](https://documentation.onesignal.com/docs/generate-a-google-server-api-key)
+5. Optional step for your application to use [Confirmed Deliveries](https://documentation.onesignal.com/docs/confirmed-deliveries) and and increment/decrement [Badges](https://documentation.onesignal.com/docs/badges) through push notifications, you need to set up an App Group for your application.
+
+In your main app target go back to Signing & Capabilities > All > + Capability and add App Groups
+
+![Instructions to add push notifications capability](https://files.readme.io/5b72690-Screen_Shot_2020-08-15_at_6.10.59_PM.png)
+
+![Instructions to add push notifications capability](https://files.readme.io/2f271ce-Screen_Shot_2020-08-15_at_6.15.25_PM.png)
+
+![Instructions to add push notifications capability](https://files.readme.io/230100f-c51bffb-Screen_Shot_2020-08-15_at_6.21.25_PM.png)
+
+For more instructions and doubts, go to [Documentation Integration](https://documentation.onesignal.com/docs/react-native-sdk-setup#step-4-install-for-ios-using-cocoapods-for-ios-apps)
 
 ### Setup Code Push
 
@@ -137,10 +153,6 @@ Starting Android 10 (API 29), notification icons should be glyphs. You need to f
 
 You can retrieve this values by running `appcenter codepush deployment list -a <ownerName>/<appName> -k`
 
-#### Add project email for the FileLogger
-
-Update project email used by `sendLoggedFiles` method in `Home.tsx`
-
 ## Libraries
 
 Let's briefly go over the benefit of each library included in this template.
@@ -193,6 +205,10 @@ A unified permissions API for React Native on iOS and Android. For iOS you have
 
 Localization using hooks. [React Native example](https://github.com/i18next/react-i18next/tree/master/example/react-native)
 
+### OneSignal
+
+OneSignal is the fastest and most reliable service to send push notifications, in-app messages, and emails to your users on mobile
+
 ### Codepush
 
 A React Native app is composed of JavaScript files and any accompanying images, which are bundled together by the packager and distributed as part of a platform-specific binary (i.e. an .ipa or .apk file). Once the app is released, updating either the JavaScript code (e.g. making bug fixes, adding new features) or image assets, requires you to recompile and redistribute the entire binary, which of course, includes any review time associated with the store(s) you are publishing to.
@@ -251,6 +267,12 @@ NPM scripts for running the app with the desired configuration are [included](ht
 
 Necessary when creating complex gesture based animations that are highly performant.
 
+### Lottie React Native
+
+Lottie is a mobile library for Android and iOS that parses Adobe After Effects animations exported as JSON with bodymovin and renders them natively on mobile!
+
+For the first time, designers can create and ship beautiful animations without an engineer painstakingly recreating it by hand.
+
 ### react-native-appstate-hook
 
 Custom react hook, built to handle iOS or Android appState in your react component.