* Modified directory structure.

* Enhanced source code documentation.
* Improved Composer integration.

Signed-off-by: Florian Wolters <wolters.fl@gmail.com>

CONTRIBUTING.md

@@ -1,52 +1,80 @@
 # Contributing Guidelines
 
-Contributions to **FlorianWolters\Component\Core\DebugPrint** are always welcome.
+## Table of Contents (ToC)
 
-Once version *1.0.0* is reached, I will try to keep backwards compatibility breaks to an **absolute minimum**. Please keep that in account when you propose a change or a feature.
+* [Introduction](#introduction)
+* [Process](#process)
+* [Licensing](#licensing)
+
+## Introduction
+
+Contributions to [**FlorianWolters\Component\Core\DebugPrint**][10] are
+**welcome** and will be **credited**.
+
+**Note:** Once version *1.0.0* is reached, all contributors shall try to keep
+backwards compatibility breaks to an **absolute minimum**.
+
+Please be aware of the above note when proposing a change or a feature.
 
 Please use the following two [GitHub][1] features to contribute:
 
-1. Report an *issue*.
-2. Submit a *pull request*.
+1. Report an [*issue*][11].
+2. Submit a [*pull request*][12].
 
-## Getting Started
+## Process
 
 1. [Sign up][2] for GitHub.
-2. *Fork* the repository on GitHub.
-3. *Clone* the repository into a new directory on your local host.
+2. [*Fork*][13] the project repository on GitHub.
+3. *Clone* the project repository into a new directory on a local host.
 4. Modify the implementation source code.
-5. Modify the test source code. Refactoring and documentation changes require no new tests. If you are adding functionality or fixing a bug **do add** a **new** test.
-6. Run the test suite(s). I only accept pull requests with **passing tests**.
-7. *Commit* and *Push* to the *fork*.
+5. Modify the test source code. Refactoring and documentation changes require no
+   new tests. If adding functionality or fixing a bug **do add** a **new** test.
+6. Run the test suite(s). Only pull requests with **passing tests** are
+   accepted.
+7. *Commit* and *Push* to the previously created *fork*.
 8. Submit a *pull request*.
 
-### Clone the repository into a new directory on your local host.
+### Clone the repository into a new directory on a local host.
 
-Run the following commands to initially checkout **FlorianWolters\Component\Core\DebugPrint**:
+Run the following commands to checkout
+[**FlorianWolters\Component\Core\DebugPrint**][10]:
 
     md DebugPrint && cd DebugPrint
     git clone git://github.com/FlorianWolters/PHP-Component-Core-DebugPrint.git
 
 ### Run the test suite(s)
 
-Before you send a pull request, run all test suite(s). To run the test suite(s), a system-wide installation of [PHPUnit][3] is required.
+Before sending a pull request, run all test suite(s). To run the test suite(s)
+[PHPUnit][3] is required, which is defined as a `require-dev` in the
+[`composer.json`][14] [Composer][4] configuration file of the project.
 
-[PHPUnit][3] can be installed via the [PEAR installer][4]. Run the following commands to install [PHPUnit][3]:
+Run the test suite(s) with the following command in the directory with the local
+Git repository:
 
-    pear preferred_state stable
-    pear config-set auto_discover 1
-    pear channel-discover pear.phpunit.de
-    pear install --alldeps phpunit/PHPUnit
+    phpunit
 
-Run the test suite(s) with the following command in the directory with the local Git repository:
+## Licensing
 
-    phpunit
+By contributing source code the contributor agrees to license the contributions
+under the GNU [Lesser General Public License (LGPL)][5].
 
 [1]: https://github.com
      "GitHub"
 [2]: https://github.com/signup/free
      "Sign up for GitHub"
-[3]: http://phpunit.de
-     "sebastianbergmann/phpunit · GitHub"
-[4]: http://pear.php.net/manual/en/guide.users.commandline.cli.php
-     "Manual :: Command line installer (PEAR)"
+[3]: https://phpunit.de
+     "PHPUnit"
+[4]: https://getcomposer.com
+     "Composer"
+[5]: https://gnu.org/licenses/lgpl.txt
+     "GNU Lesser General Public License"
+[10]: https://github.com/FlorianWolters/PHP-Component-Core-DebugPrint
+      "FlorianWolters/PHP-Component-Core-DebugPrint · GitHub"
+[11]: https://github.com/FlorianWolters/PHP-Component-Core-DebugPrint/issues
+      "Issues · FlorianWolters/PHP-Component-Core-DebugPrint · GitHub"
+[12]: https://github.com/FlorianWolters/PHP-Component-Core-DebugPrint/pulls
+      "Pull Requests · FlorianWolters/PHP-Component-Core-DebugPrint · GitHub"
+[13]: https://github.com/FlorianWolters/PHP-Component-Core-DebugPrint/fork
+      "Fork your own copy of FlorianWolters/PHP-Component-Core-DebugPrint to your account"
+[14]: https://github.com/FlorianWolters/PHP-Component-Core-DebugPrint/blob/master/composer.json
+      "PHP-Component-Core-DebugPrint/composer.json at master · FlorianWolters/PHP-Component-Core-DebugPrint"