typo, downloads badge, installation guide

Author: StackOverflowIsBetterThanAnyAI

README.md

@@ -1,6 +1,14 @@
-# Prettier settings:
+# Prettier Settings:
 
-This package adds these prettier settings:
+![npm Downloads Last Year](https://img.shields.io/npm/dy/prettier-es5)
+
+## Installation
+
+Install this package with `npm i -D prettier-es5` as a developer dependency.
+
+## Content
+
+It adds these prettier settings to your project:
 
 ```
 {
@@ -11,6 +19,8 @@ This package adds these prettier settings:
 }
 ```
 
+## Usage
+
 In order to use this config, you need to add the following to your `package.json` file:
 
 ```