Update readme with link to example app
Update readme with link to example app

CapeSepias/cordova-plugin-background-app,CapeSepias/cordova-plugin-background-app,471685249/cordova-plugin-background-app,antoniodesouza/cordova-plugin-background-app,MobileChromeApps/cordova-plugin-background-app,CapeSepias/cordova-plugin-background-app,MobileChromeApps/cordova-plugin-background-app,MobileChromeApps/cordova-plugin-background-app,antoniodesouza/cordova-plugin-background-app,antoniodesouza/cordova-plugin-background-app,471685249/cordova-plugin-background-app,471685249/cordova-plugin-background-app