Readme tweaks

Author: nicolasgarnier

image-sharp/README.md

@@ -23,12 +23,13 @@ The function triggers on upload of any file to your Firebase project's default C
 
 To deploy and test the sample:
 
- - Create a Firebase project on the [Firebase Console](https://console.firebase.google.com) and visit the **Storage** tab.
- - Get the code, for instance using `git clone https://github.com/firebase/functions-samples`
- - Enter the correct directory `cd functions-samples/image-sharp`
- - Setup the CLI to use your Firebase project using `firebase use --add` and select your Firebase project
- - Deploy your project's code using `firebase deploy`
- - Go to the Firebase Console **Storage** tab and upload an image. After a short time a thumbnail image with the same name but a `thumb_` prefix will be created in the same folder (make sure you refresh the UI to see the new file).
+ 1. Create a Firebase project on the [Firebase Console](https://console.firebase.google.com).
+ 1. Get the code, for instance using `git clone https://github.com/firebase/functions-samples`
+ 1. Enter the correct directory `cd functions-samples/image-sharp`
+ 1. If you do not have it yet, install the Firebase CLI `npm install -g firebase-tools`
+ 1. Setup the CLI to use your Firebase project using `firebase use --add` and select your Firebase project
+ 1. Deploy your project's code using `firebase deploy`
+ 1. Go to the Firebase Console **Storage** tab and upload an image. After a short time a thumbnail image with the same name but a `thumb_` prefix will be created in the same folder (make sure you refresh the UI to see the new file).
 
 
 ## Contributing