diff --git a/index.css b/index.css
index e0e4086..2c0b4b6 100644
--- a/index.css
+++ b/index.css
@@ -1,4 +1,4 @@
-@charset "utf-8";
+@charset 'utf-8';
 
 html,
 body {
diff --git a/package.json b/package.json
index 3947196..faee26e 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,10 @@
 	"author": {
 		"name": "Sindre Sorhus",
 		"email": "sindresorhus@gmail.com",
-		"url": "sindresorhus.com"
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=4"
 	},
 	"files": [
 		"index.css"
diff --git a/readme.md b/readme.md
index 2db6d0b..6ac7e81 100644
--- a/readme.md
+++ b/readme.md
@@ -4,15 +4,12 @@
 
 ![](screenshot.png)
 
-
 ## Install
 
-
-```
-$ npm install todomvc-app-css
+```sh
+npm install todomvc-app-css
 ```
 
-
 ## Getting started
 
 ```html
@@ -21,7 +18,6 @@ $ npm install todomvc-app-css
 
 See the [TodoMVC app template](https://github.com/tastejs/todomvc-app-template).
 
-
 ## License
 
 CC-BY-4.0 © [Sindre Sorhus](https://sindresorhus.com)