Actualize docs.

README.md

@@ -5,19 +5,18 @@ Infinite bitmask implementation
 [![Packagist](https://img.shields.io/packagist/v/aliance/infinite-bitmask.svg)](https://packagist.org/packages/aliance/infinite-bitmask)
 [![Build Status](https://travis-ci.org/Aliance/InfiniteBitmask.svg?branch=master)](https://travis-ci.org/Aliance/InfiniteBitmask)
 
-Installation
+About
 ---
 
-For install library you need to modify your composer configuration file
+Currently supported PHP version: >= 5.5
 
-```
-    "aliance/infinite-bitmask": "*"
-```
+Installation
+---
 
-And just run installation command
+Install the latest version with composer:
 
-```
-    $ composer.phar install
+```bash
+$ composer require aliance/infinite-bitmask
 ```
 
 Usage
@@ -72,18 +71,7 @@ array(3) {
 Tests
 ---
 
-For completely tests running just call `phpunit` command from `./vendor/bin`
-
-```
-Aliance/InfiniteBitmask $ ./vendor/bin/phpunit 
-PHPUnit 4.8.27 by Sebastian Bergmann and contributors.
-
-........................
-
-Time: 100 ms, Memory: 4.00MB
-
-OK (24 tests, 72 assertions)
-```
+For completely tests running just call `composer exec phpunit`
 
 License
 ---