diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..efcbeb1
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,12 @@
+language: php
+
+php:
+   - 5.6
+
+before_script:
+   - cd test
+   - composer self-update || true
+   - composer install --no-interaction --no-progress
+
+script:
+   - php check.php
diff --git a/README.md b/README.md
index c025622..a31dd04 100644
--- a/README.md
+++ b/README.md
@@ -509,7 +509,7 @@ A curated list of amazingly awesome PHP libraries, resources and shiny things.
 * [Ruler](https://github.com/bobthecow/Ruler) - A simple stateless production rules engine.
 * [LiteCQRS](https://github.com/beberlei/litecqrs-php) - A CQRS (Command Query Responsibility Separation) library.
 * [Sslurp](https://github.com/EvanDotPro/Sslurp) - A library that makes dealing with SSL suck less.
-* [PHP Option](https://github.com/schmittjoh/php-option) An option type library.
+* [PHP Option](https://github.com/schmittjoh/php-option) - An option type library.
 * [Metrics](https://github.com/beberlei/metrics) - A simple metrics API library.
 * [Sabre VObject](https://github.com/evert/sabre-vobject) - A library for parsing VCard and iCalendar objects.
 * [Annotations](https://github.com/doctrine/annotations) - An annotations library (part of Doctrine).
@@ -559,7 +559,7 @@ A curated list of amazingly awesome PHP libraries, resources and shiny things.
 * [Ansible](http://www.ansibleworks.com/) - A radically simple orchestration framework.
 * [Puppet](http://puppetlabs.com/) - A server automation framework and application.
 * [Chef](https://github.com/opscode/chef) - A systems integration framework.
-* [SaltStack](http://saltstack.com/community.html) - An infrastructure management tool.
+* [SaltStack](http://www.saltstack.com/) - An infrastructure management tool.
 * [PHP Brew](https://github.com/c9s/phpbrew) - A PHP version manager and installer.
 * [PHP Env](https://github.com/CHH/phpenv) - Another PHP version manager.
 * [PHP Switch](https://github.com/jubianchi/phpswitch) - Another version manager.
@@ -630,7 +630,6 @@ Various resources, such as books, websites and articles, for improving your PHP
 * [Preventing CSRF Attacks](http://blog.ircmaxell.com/2013/02/preventing-csrf-attacks.html) - An article on preventing CSRF attacks.
 * [Don't Worry About BREACH](http://blog.ircmaxell.com/2013/08/dont-worry-about-breach.html) - An article about the BREACH hack and CSRF tokens.
 * [On PHP 5.3, Lamda Functions and Closures](http://fabien.potencier.org/article/17/on-php-5-3-lambda-functions-and-closures) - An article about lambda functions and closures.
-* [Use Env](http://seancoates.com/blogs/use-env) - An article about using the unix environment helper.
 * [Composer Primer](http://daylerees.com/composer-primer) - A Composer primer.
 * [Composer Versioning](https://igor.io/2013/01/07/composer-versioning.html) - An article about Composer versioning.
 * [Composer Stability Flags](https://igor.io/2013/02/07/composer-stability-flags.html) - An article about Composer stability flags.
diff --git a/test/.gitignore b/test/.gitignore
new file mode 100644
index 0000000..4f4acd3
--- /dev/null
+++ b/test/.gitignore
@@ -0,0 +1,2 @@
+vendor/
+composer.lock
\ No newline at end of file
diff --git a/test/check.php b/test/check.php
new file mode 100644
index 0000000..1ba9cca
--- /dev/null
+++ b/test/check.php
@@ -0,0 +1,188 @@
+<?php
+
+require_once(__DIR__ . '/vendor/autoload.php');
+
+// Overwriting the Markdown parser so we get the Blocks instead of HTML.
+class MyMarkdown extends \cebe\markdown\GithubMarkdown
+{
+    protected function parseBlocks($lines)
+    {
+        $blocks = [];
+
+        // convert lines to blocks
+
+        for ($i = 0, $count = count($lines); $i < $count; $i++) {
+            if (!empty($lines[$i]) && rtrim($lines[$i]) !== '') { // skip empty lines
+                // identify a blocks beginning
+                $blockType = $this->identifyLine($lines, $i);
+
+                // call consume method for the detected block type to consume further lines
+                list($block, $i) = $this->{'consume' . $blockType}($lines, $i);
+                if ($block !== false) {
+                    $blocks[] = $block;
+                }
+            }
+        }
+
+        return $blocks;
+    }
+}
+
+// Loading Markdown and parsing blocks from it.
+$text = file_get_contents(__DIR__ . '/../README.md');
+$markdown = new MyMarkdown();
+$blocks = $markdown->parse($text);
+
+// Run checks.
+checkBlocks($blocks);
+checkLinks($text);
+
+// Some List items have a special formatting.
+// List items that are stripos'ing one of these strings will be ignored.
+function getIgnoredListItems()
+{
+    return array(
+        'blog.ircmaxell.com/2013/09/beyond-design-patterns',
+        'blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers',
+        'php.net/manual/en/features.gc.refcounting-basics',
+    );
+}
+
+//--- Functions
+
+function checkLinks($text)
+{
+    // Regex from: https://mathiasbynens.be/demo/url-regex
+    preg_match_all('_\((?:(?:https?|ftp)://)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)*(?:\.(?:[a-z\x{00a1}-\x{ffff}]{2,})))(?::\d{2,5})?(?:/[^\s\)]*)?\)_iuS', $text, $links);
+    $links = array_map(function ($link) {
+        return trim($link, '()');
+    }, array_unique($links[0]));
+
+    $client = new GuzzleHttp\Client();
+
+    // Ignoring some domains.
+    $links = array_filter($links, function($link) {
+        $ignoredDomains = array(
+            'www.owasp.org', // Their server somehow fails responding to curl.
+        );
+        foreach($ignoredDomains as $ignoredDomain) {
+            if(false !== stripos($link, $ignoredDomain)) {
+                return false;
+            }
+        }
+        return true;
+    });
+
+    // Creating guzzle requests.
+    $requests = array_map(function ($link) use ($client) {
+        return $client->createRequest('GET', $link, array('verify' => false, 'timeout' => 99999));
+    }, $links);
+
+    // Start all these requests partially parallel.
+    $responses = GuzzleHttp\batch(
+        $client,
+        $requests,
+        array(
+            'parallel' => 5,
+            'complete' => function (\GuzzleHttp\Event\CompleteEvent $event) {
+                echo 'Completed request to ' . $event->getRequest()->getUrl() . "\n";
+            },
+            'error' => function (\GuzzleHttp\Event\ErrorEvent $event) {
+                echo 'Request failed: ' . $event->getRequest()->getUrl() . "\n";
+                $event->throwImmediately(true);
+            }
+        )
+    );
+
+    // Check for exceptions.
+    foreach($responses as $response) {
+        if($response instanceof \Exception) {
+            throw $response;
+        }
+    }
+}
+
+function checkBlocks(array $blocks)
+{
+    // Check List formatting
+    $lists = onlyLists($blocks);
+    $tableOfContent = array_shift($lists);
+    checkLists($lists);
+
+    // Check table of content ordering.
+    $tableOfContent = $tableOfContent['items'];
+    $indentedHeadlines = indentHeadlines(onlyHeadlines($blocks));
+    // Checking array to be euqal.
+    if (var_export($tableOfContent, true) != var_export($indentedHeadlines, true)) {
+        throw new \Exception("Table of contents and headlines in document are _not_ in the same order.");
+    }
+}
+
+function indentHeadlines(array $headlines)
+{
+    $indented = array();
+    $index = 0;
+    foreach ($headlines as $headline) {
+        $content = $headline['content'];
+        $contentFormatted = '[' . $content . '](#' . str_ireplace(' ', '-', strtolower($content)) . ')';
+        if (1 == $headline['level']) {
+            $index++;
+            $indented[$index][] = $contentFormatted;
+        } else {
+            $indented[$index][] = '- ' . $contentFormatted;
+        }
+    }
+
+    return $indented;
+}
+
+function checkLists(array $lists)
+{
+    array_map(function ($list) {
+        if ('list' == $list['type']) {
+            checkListItems($list['items']);
+        }
+    }, $lists);
+}
+
+function checkListItems(array $list)
+{
+    array_map(function ($items) {
+        foreach ($items as $item) {
+            validateListItem($item);
+        }
+    }, $list);
+}
+
+function validateListItem($item)
+{
+    $item = trim($item);
+
+    foreach (getIgnoredListItems() as $ignoredString) {
+        if (false !== stripos($item, $ignoredString)) {
+            // ignore this list item because it contains a special formatting or such.
+            return;
+        }
+    }
+
+    if (!preg_match('@^\[(.+)\]\((.+)\) - (.+).$@i', $item, $matches)) {
+        throw new \Exception("Invalid ListItem: " . $item);
+    }
+    //$name = $matches[1];
+    //$url = $matches[2];
+    //$description = $matches[3];
+}
+
+function onlyHeadlines(array $blocks)
+{
+    return array_values(array_filter($blocks, function ($block) {
+        return 'headline' == $block['type'];
+    }));
+}
+
+function onlyLists(array $blocks)
+{
+    return array_values(array_filter($blocks, function ($block) {
+        return 'list' == $block['type'];
+    }));
+}
diff --git a/test/composer.json b/test/composer.json
new file mode 100644
index 0000000..17ede4d
--- /dev/null
+++ b/test/composer.json
@@ -0,0 +1,9 @@
+{
+    "name": "ziadoz/awesome-php",
+    "description": "Just a test script for formatting and links.",
+    "require": {
+        "cebe/markdown": "~0.9",
+        "guzzlehttp/guzzle": "~4.0"
+    },
+    "license": "MIT"
+}