Release README patch (v4.0.1)

Update the example CDN URLs found in the README to use v4 instead of v3.

README.md

@@ -18,15 +18,15 @@ Icons can be downloaded as SVGs directly from [our website](https://simpleicons.
 Icons can be served from a CDN such as [JSDelivr](https://www.jsdelivr.com/package/npm/simple-icons) or [Unpkg](https://unpkg.com/browse/simple-icons/). Simply use the `simple-icons` npm package and specify a version in the URL like the following:
 
 ```html
-<img height="32" width="32" src="https://cdn.jsdelivr.net/npm/simple-icons@v3/icons/[ICON NAME].svg" />
-<img height="32" width="32" src="https://unpkg.com/simple-icons@v3/icons/[ICON NAME].svg" />
+<img height="32" width="32" src="https://cdn.jsdelivr.net/npm/simple-icons@v4/icons/[ICON NAME].svg" />
+<img height="32" width="32" src="https://unpkg.com/simple-icons@v4/icons/[ICON NAME].svg" />
 ```
 
 Where `[ICON NAME]` is replaced by the icon name, for example:
 
 ```html
-<img height="32" width="32" src="https://cdn.jsdelivr.net/npm/simple-icons@v3/icons/simpleicons.svg" />
-<img height="32" width="32" src="https://unpkg.com/simple-icons@v3/icons/simpleicons.svg" />
+<img height="32" width="32" src="https://cdn.jsdelivr.net/npm/simple-icons@v4/icons/simpleicons.svg" />
+<img height="32" width="32" src="https://unpkg.com/simple-icons@v4/icons/simpleicons.svg" />
 ```
 
 These examples use the latest major version. This means you won't receive any updates following the next major release. You can use `@latest` instead to receive updates indefinitely. However, this will result in a `404` error if the icon is removed.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "simple-icons",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "SVG icons for popular brands https://simpleicons.org",
   "homepage": "https://www.simpleicons.org",
   "keywords": [