Updates to outcome events PR

* Additions to example app
* Updated iOS native to 2.12.2

Author: mikechoch

examples/RNOneSignal/App.js

@@ -111,6 +111,9 @@ export default class App extends Component {
 
   oneSignalInAppMessagingExamples() {
     // Add a single trigger with a value associated with it
+    OneSignal.addTrigger('trigger1', 'one');
+
+    // Get trigger value for the key
     OneSignal.getTriggerValueForKey('trigger1')
       .then(response => {
         console.log('trigger1 value: ' + response);

react-native-onesignal.podspec

@@ -22,5 +22,5 @@ Pod::Spec.new do |s|
   # pod 'React', :path => '../node_modules/react-native/'
 
   # The Native OneSignal-iOS-SDK from cocoapods.
-  s.dependency 'OneSignal', '2.11.2'
+  s.dependency 'OneSignal', '2.12.2'
 end