Add link to laravel driver (#175)

Hi, I really like your package and we often use it with Laravel so I thought it would be nice to have a Laravel implementation that made certain tasks easier, such as returning a response with the output file inline or as a download or storing the file as you would with Laravel's own storage drivers. 

Please consider reviewing my implementation and offering it as an alternative to Laravel users.

Keep up with the awesome job 👍🏻

README.md

@@ -39,6 +39,10 @@ Browsershot::url('https://example.com')->bodyHtml(); // returns the html of the
 
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+## Framework implementations
+
+* Laravel: [laravel-browsershot](https://github.com/verumconsilium/laravel-browsershot)
+
 
 ## Requirements