chore(readme): Change to new Ionic CLI

Author: dotNetkow

README.md

@@ -27,9 +27,9 @@ After the user navigates to Tab 2 (Photos), they can tap/click on the camera but
 
 > Note: It's highly recommended to follow along with the [tutorial guide](https://ionicframework.com/docs/angular/your-first-app), which goes into more depth, but this is the fastest way to run the app. 
 
-0) Install Ionic if needed: `npm install -g ionic`.
+0) Install Ionic if needed: `npm install -g @ionic/cli`.
 1) Clone this repository.
 2) In a terminal, change directory into the repo: `cd photo-gallery-capacitor-ng`.
 3) Install all packages: `npm install`.
 4) Run on the web: `ionic serve`.
-5) Run on iOS or Android: See [here](https://ionicframework.com/docs/building/running).
+5) Run on iOS or Android: See [here](https://ionicframework.com/docs/building/running).