chore(changelog): add upgrade instructions for 3.4.0

Author: danbucholtz

CHANGELOG.md

@@ -1,6 +1,35 @@
 <a name="3.4.0"></a>
 # [3.4.0](https://github.com/ionic-team/ionic/compare/v3.3.0...v3.4.0) (2017-06-15)
 
+### Steps to Upgrade
+
+`ionic-angular` should be set to version `3.4.0` in the package.json dependency list. The latest `@angular` release `4.1.3` is also supported. Feel free to update apps by updating the `package.json` dependencies to match below.
+
+```
+"dependencies": {
+  "@angular/common": "4.1.3",
+  "@angular/compiler": "4.1.3",
+  "@angular/compiler-cli": "4.1.3",
+  "@angular/core": "4.1.3",
+  "@angular/forms": "4.1.3",
+  "@angular/http": "4.1.3",
+  "@angular/platform-browser": "4.1.3",
+  "@angular/platform-browser-dynamic": "4.1.3",
+  "@ionic-native/core": "3.10.2",
+  "@ionic-native/splash-screen": "3.10.2",
+  "@ionic-native/status-bar": "3.10.2",
+  "@ionic/storage": "2.0.1",
+  "ionic-angular": "3.3.4",
+  "ionicons": "3.0.0",
+  "rxjs": "5.1.1",
+  "sw-toolbox": "3.6.0",
+  "zone.js": "0.8.11"
+},
+"devDependencies": {
+  "@ionic/app-scripts": "1.3.7",
+  "typescript": "2.3.3"
+}
+```
 
 ### Bug Fixes