chore(readme): note about rc dist-tag

imhoffd · imhoffd · commit c3134508f7cb · 2018-03-22T17:08:32.000-05:00
diff --git a/README.md b/README.md
@@ -3,6 +3,8 @@
 
 # Ionic CLI
 
+:wave: :point_right: *Please test :sparkles: **CLI 4** :sparkles: release candidates:* `npm i -g ionic@rc` :heart:
+
 The Ionic command line interface (CLI) is your go-to tool for developing
 [Ionic][ionic-homepage] apps.
 
