updated README for v1.4.0

Author: dstpierre

README.md

@@ -1,7 +1,7 @@
 # StaticBackend's CLI
 
 
-This CLI allows you to test most of the services offered at 
+This CLI allows you to test all the services offered at 
 [StaticBackend](https://staticbackend.com).
 
 It can be used to manage your resources like your database, forms, 
@@ -10,6 +10,13 @@ and your account.
 [Here's how to get started](https://staticbackend.com/getting-started/cli/) 
 with the CLI.
 
+## Quick install via NPM
+
+```shell
+$> npm install -g @staticbackend/cli
+$> backend help
+```
+
 ## Some commands
 
 Start the development server: