docs: update read me with Instructions

Author: mainawycliffe

README.md

@@ -1,21 +1,55 @@
-# Ghost CMS Firebase Storage Adapter
+# Ghost Firebase Storage Adapter
 
 This a Firebase [Storage adapter](https://ghost.org/docs/concepts/storage-adapters/) for Ghost CMS. Images uploaded via Ghost CMS
 will be save to Firebase Storage.
 
-## Configure Adapter For your Firebase Project
+## Prerequisite
 
-To configure you project, the following fields can be passed along:
+- Have a [Firebase Project](https://firebase.google.com/docs) with [Firebase Storage](https://firebase.google.com/docs/storage) enabled.
+- Generate Private key for your Firebase Service Account - [Instructions](https://firebase.google.com/docs/admin/setup#initialize-sdk)
 
-| Field          | Required | Desc                                                           |
-| -------------- | -------- | -------------------------------------------------------------- |
-| serviceAccount | true     | Path to your firebase account credentials                      |
-| bucketName     | true     | The bucket to save ghost uploads to                            |
-| basePath       | false    | the path to append to the filename of the ghost upload         |
-| uploadOptions  | false    | set uploadOptions to be added to your file uploads to firebase |
-| domain         | false    | the domain name to append to the destination path name         |
+## Setup
+
+### Installation
+
+At the root of you ghost blog, install this adapter using either `npm` or
+`yarn`.
+
+#### NPM
+
+```sh
+npm i ghost-firebase-storage-adapter
+```
+
+#### Yarn
+
+```sh
+yarn add ghost-firebase-storage-adapter
+```
+
+### Create Firebase Storage Module
 
-### Example
+After installation, a scripts runs that automatically creates a storage adapter
+in the `content/adapters/storage` directory, named `firebase.js` with the
+following content:
+
+```javascript
+'use strict'
+
+module.exports = require('ghost-firebase-storage-adapter');
+```
+
+> **NB:** if the `firebase.js` was not created, create it and add the content.
+
+## Configurations
+
+> Before we can proceed, make sure you have the bucket-name, without any prefix
+> (`gs://`) or suffix (`.appspot.com`) and your Firebase Service Account Private
+> Key, a `json` file.
+
+- Add the json file containing the private key to the root of you ghost
+  directory or somewhere else more secure.
+- Add a `storage` block to your config.${GHOST_ENVIRONMENT}.json as shown below:
 
 ```json
 "serviceAccount": "./path/to/service/account.json",
@@ -29,6 +63,15 @@ To configure you project, the following fields can be passed along:
 }
 ```
 
-## Note
+### Configure Adapter For your Firebase Project
+
+To configure you project, the following fields can be passed along:
+
+| Field          | Required | c                                                              |
+| -------------- | -------- | -------------------------------------------------------------- |
+| serviceAccount | true     | Path to your firebase account credentials                      |
+| bucketName     | true     | The bucket to save ghost uploads to                            |
+| basePath       | false    | the path to append to the filename of the ghost upload         |
+| uploadOptions  | false    | set uploadOptions to be added to your file uploads to firebase |
+| domain         | false    | the domain name to append to the destination path name         |
 
-This is a very work in progress.