Better dev setup instructions

EddyVerbruggen · EddyVerbruggen · commit 29bc3be629aa · 2017-06-07T10:37:03.000+02:00
diff --git a/README.md b/README.md
@@ -126,7 +126,7 @@ Add the following to `app/App_Resources/Android/drawable/checkbox_grey.xml`
 
 
 ## Demo Setup
-* npm install tns-platform-declarations
+* npm i
 * npm run preparedemo
 * npm run demo.ios
 
