Improve this doc

OneSignal

``
$ ionic cordova plugin add onesignal-cordova-plugin
$ npm install @ionic-native/onesignal
`

Usage Documentation

Plugin Repo: https://github.com/OneSignal/OneSignal-Cordova-SDK

The OneSignal plugin is an client implementation for using the OneSignal Service.
OneSignal is a simple implementation for delivering push notifications.

Please view the official OneSignal Ionic SDK Installation guide
for more information.

#### Icons
If you want to use generated icons with command ionic cordova resources:

1. Add a file to your hooks directory called copy_android_notification_icons.js

2. Configure the hook in your config.xml
`



`

3. Put the following code in it:

`
#!/usr/bin/env node

var fs = require('fs');
var path = require('path');

var filestocopy = [{
"resources/android/icon/drawable-hdpi-icon.png":
"platforms/android/app/src/main/res/drawable-hdpi/ic_stat_onesignal_default.png"
}, {
"resources/android/icon/drawable-mdpi-icon.png":
"platforms/android/app/src/main/res/drawable-mdpi/ic_stat_onesignal_default.png"
}, {
"resources/android/icon/drawable-xhdpi-icon.png":
"platforms/android/app/src/main/res/drawable-xhdpi/ic_stat_onesignal_default.png"
}, {
"resources/android/icon/drawable-xxhdpi-icon.png":
"platforms/android/app/src/main/res/drawable-xxhdpi/ic_stat_onesignal_default.png"
}, {
"resources/android/icon/drawable-xxxhdpi-icon.png":
"platforms/android/app/src/main/res/drawable-xxxhdpi/ic_stat_onesignal_default.png"
} ];

module.exports = function(context) {

// no need to configure below
var rootdir = context.opts.projectRoot;

filestocopy.forEach(function(obj) {
Object.keys(obj).forEach(function(key) {
var val = obj[key];
var srcfile = path.join(rootdir, key);
var destfile = path.join(rootdir, val);
console.log("copying "+srcfile+" to "+destfile);
var destdir = path.dirname(destfile);
if (fs.existsSync(srcfile) && fs.existsSync(destdir)) {
fs.createReadStream(srcfile).pipe(
fs.createWriteStream(destfile));
}
});
});

};
`

3. From the root of your project make the file executable:
$ chmod +x hooks/copy_android_notification_icons.js`

Supported platforms

- Amazon Fire OS
- Android
- iOS
- Windows