docs: remove warning about outdated docs in README

README.md

@@ -2,6 +2,7 @@
   <a href="https://www.npmjs.com/package/smoothscroll-anchor-polyfill"><img align="center" src="https://img.shields.io/npm/v/smoothscroll-anchor-polyfill.svg" alt="NPM version"></a>
   <a href="https://travis-ci.org/jonaskuske/smoothscroll-anchor-polyfill"><img align="center" src="https://travis-ci.org/jonaskuske/smoothscroll-anchor-polyfill.svg?branch=master" alt="Build status"></a>
   <a href="./LICENSE"><img align="center" src="https://img.shields.io/npm/l/smoothscroll-anchor-polyfill.svg" alt="License"></a>
+  <a href="https://jonaskuske.github.io/smoothscroll-anchor-polyfill"><img align="center" src="https://img.shields.io/badge/documentation-up--to--date-blue.svg" alt="Documentation"></a>
 </p>  
 
 &nbsp;  
@@ -77,8 +78,6 @@ import 'smoothscroll-anchor-polyfill';
 
 ## Full Documentation & Demo
 
-> ⚠ The documentation is not up-to-date as of now, it will be updated  when this packages leaves the beta phase.
-
 The full documentation with advanced installation instructions, limitations, features like enabling and disabling the smooth scrolling and more can be found at
 [**jonaskuske.github.io/smoothscroll-anchor-polyfill**](https://jonaskuske.github.io/smoothscroll-anchor-polyfill).  
 The documentation site itself is built as a smooth scrolling one-page design, utilizing this polyfill.