Add Fuckin' Usage in README

Author: deadcoder0904

README.md

@@ -6,6 +6,32 @@
 
 Because I faced this problem while making [Meta Preview](https://twitter.com/deadcoder0904/status/1048129409885122560)
 
+## Usage
+
+Just replace the `script` variable in `index.js` with the contents of your inline script & run `index.js`
+
+## Example
+
+If your inline script is like -
+
+```js
+<script>alert('Yo Yo Yo!')</script>
+```
+
+then replace `script` variable in `index.js` like -
+
+```js
+const script = `alert('Yo Yo Yo!')`;
+```
+
+& type in terminal
+
+```bash
+node index.js
+```
+
+Voila, it will copy the hash to the clipboard.
+
 ## Credits
 
 All the credits go to https://stackoverflow.com/a/38554505/6141587