Remove beta status

Author: tgalopin

README.md

@@ -1,8 +1,5 @@
 # html-sanitizer
 
-> This package is in beta for now, until we are confident that every aspect of security related to HTML
-> sanitation is appropriately covered.
-
 [![Build Status](https://travis-ci.org/tgalopin/html-sanitizer.svg?branch=master)](https://travis-ci.org/tgalopin/html-sanitizer)
 
 [![SymfonyInsight](https://insight.symfony.com/projects/befd5a5b-574c-4bea-9c4f-3ad202729a1b/big.svg)](https://insight.symfony.com/projects/befd5a5b-574c-4bea-9c4f-3ad202729a1b)