update changelog

CHANGELOG.md

@@ -1,5 +1,9 @@
-## 2.2.0 (2017-03-02)
+## 3.0.0 (2017-03-15)
+Merge `ZipOutputFile` with ZipFile and optimize the zip archive update.
+
+See the update instructions in README.md.
 
+## 2.2.0 (2017-03-02)
 Features:
   - create output object `ZipOutputFile` from `ZipFile` in method `ZipFile::edit()`.
   - create output object `ZipOutputFile` from filename in static method `ZipOutputFile::openFromFile(string $filename)`.

README.md

@@ -1,8 +1,8 @@
 `PhpZip`
-====================
+========
 `PhpZip` - php library for manipulating zip archives.
 
-[![Build Status](https://travis-ci.org/Ne-Lexa/php-zip.svg?branch=feature/3.0.0-dev)](https://travis-ci.org/Ne-Lexa/php-zip)
+[![Build Status](https://travis-ci.org/Ne-Lexa/php-zip.svg?branch=master)](https://travis-ci.org/Ne-Lexa/php-zip)
 [![Latest Stable Version](https://poser.pugx.org/nelexa/zip/v/stable)](https://packagist.org/packages/nelexa/zip)
 [![Total Downloads](https://poser.pugx.org/nelexa/zip/downloads)](https://packagist.org/packages/nelexa/zip)
 [![Minimum PHP Version](http://img.shields.io/badge/php%2064bit-%3E%3D%205.5-8892BF.svg)](https://php.net/)