Remove unstable notice from readme

Author: leganz

README.md

@@ -2,8 +2,6 @@
 
 The goal of this project is the attemp to provide a helper functionality for creating beautiful, printable and secure documents.
 
-!!! ATTENTION: This project is still work in progess !!! Do not use it until we release a stable candiate.
-
 [![Maintainability](https://api.codeclimate.com/v1/badges/0f9d20da7317b5425e72/maintainability)](https://codeclimate.com/github/AMBERSIVE/laravel-document-viewer/maintainability) [![Test Coverage](https://api.codeclimate.com/v1/badges/0f9d20da7317b5425e72/test_coverage)](https://codeclimate.com/github/AMBERSIVE/laravel-document-viewer/test_coverage)
 
 ## Installation