Update installation instructions.

README.md

@@ -1,30 +1,43 @@
-PHPUnit
-=======
+# PHPUnit
 
 PHPUnit is the de-facto standard for unit testing in PHP projects. It provides both a framework that makes the writing of tests easy as well as the functionality to easily run the tests and analyse their results.
 
-Requirements
-------------
+## Requirements
 
 * PHPUnit 3.7 requires PHP 5.3.3 (or later) but PHP 5.4.6 (or later) is highly recommended.
 * [PHP_CodeCoverage](http://github.com/sebastianbergmann/php-code-coverage), the library that is used by PHPUnit to collect and process code coverage information, depends on [Xdebug](http://xdebug.org/) 2.0.5 (or later) but Xdebug 2.2.1 (or later) is highly recommended.
 
-Installation
-------------
+## Installation
 
-PHPUnit should be installed using the PEAR Installer, the backbone of the [PHP Extension and Application Repository](http://pear.php.net/) that provides a distribution system for PHP packages.
+There a three supported ways of installing PHPUnit.
 
-Depending on your OS distribution and/or your PHP environment, you may need to install PEAR or update your existing PEAR installation before you can proceed with the following instructions. `sudo pear upgrade PEAR` usually suffices to upgrade an existing PEAR installation. The [PEAR Manual ](http://pear.php.net/manual/en/installation.getting.php) explains how to perform a fresh installation of PEAR.
+You can use the [PEAR Installer](http://pear.php.net/manual/en/guide.users.commandline.cli.php) or [Composer](http://getcomposer.org/) to download and install PHPUnit as well as its dependencies. You can also download a [PHP Archive (PHAR)](http://php.net/phar) of PHPUnit that has all required (as well as some optional) dependencies of PHPUnit bundled in a single file.
+
+### PEAR Installer
 
 The following two commands (which you may have to run as `root`) are all that is required to install PHPUnit using the PEAR Installer:
 
     pear config-set auto_discover 1
     pear install pear.phpunit.de/PHPUnit
 
-After the installation you can find the PHPUnit source files inside your local PEAR directory; the path is usually `/usr/lib/php/PHPUnit`.
+### Composer
+
+To add PHPUnit as a local, per-project dependency to your project, simply add a dependency on `phpunit/phpunit` to your project's `composer.json` file. Here is a minimal example of a `composer.json` file that just defines a development-time dependency on PHPUnit 3.7:
+
+    {
+        "require-dev": {
+            "phpunit/phpunit": "3.7.*"
+        }
+    }
+
+### PHP Archive (PHAR)
+
+You can also download a PHP Archive (PHAR) of PHPUnit that has all required (as well as some optional) dependencies of PHPUnit bundled in a single file:
+
+    wget http://pear.phpunit.de/get/phpunit.phar
+    chmod +x phpunit.phar
 
-Documentation
--------------
+## Documentation
 
 The documentation for PHPUnit is available in different formats:
 
@@ -41,22 +54,20 @@ The documentation for PHPUnit is available in different formats:
 * [Japanese, PDF](http://www.phpunit.de/manual/3.7/ja/phpunit-book.pdf)
 * [Japanese, ePub](http://www.phpunit.de/manual/3.7/ja/phpunit-book.epub)
 
-IRC
----
+## IRC
 
 The [#phpunit channel on the Freenode IRC network](irc://irc.freenode.net/phpunit) is a place to chat about PHPUnit.
 
-List of Contributors
---------------------
+## List of Contributors
 
 Thanks to everyone who has contributed to PHPUnit! You can find a detailed list of contributors on every PHPUnit related package on GitHub. This list shows only the major components:
 
-- [PHPUnit](https://github.com/sebastianbergmann/phpunit/graphs/contributors)
-- [PHP_CodeCoverage](https://github.com/sebastianbergmann/php-code-coverage/graphs/contributors)
-- [PHPUnit_MockObject](https://github.com/sebastianbergmann/phpunit-mock-objects/graphs/contributors)
+* [PHPUnit](https://github.com/sebastianbergmann/phpunit/graphs/contributors)
+* [PHP_CodeCoverage](https://github.com/sebastianbergmann/php-code-coverage/graphs/contributors)
+* [PHPUnit_MockObject](https://github.com/sebastianbergmann/phpunit-mock-objects/graphs/contributors)
 
 A very special thanks to everyone who has contributed to the documentation and helps maintaining the translations:
 
-- [PHPUnit Documentation](https://github.com/sebastianbergmann/phpunit-documentation/graphs/contributors)
+* [PHPUnit Documentation](https://github.com/sebastianbergmann/phpunit-documentation/graphs/contributors)
 
 Please refer to [CONTRIBUTING.md](https://github.com/sebastianbergmann/phpunit/blob/master/CONTRIBUTING.md) for information on how to contribute to PHPUnit and its related projects.