Issue #67: Implement MariaDB/PostgreSQL connection

Signed-off-by: alexmerlin <alex.merlin.1985@gmail.com>

Author: alexmerlin

.gitignore

@@ -2,7 +2,6 @@
 /.phpunit.cache
 /clover.xml
 /coveralls-upload.json
-/phpunit.xml
 /vendor/
 .idea
 composer.lock

phpunit.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+    bootstrap="vendor/autoload.php"
+    displayDetailsOnIncompleteTests="true"
+    displayDetailsOnSkippedTests="true"
+    displayDetailsOnTestsThatTriggerDeprecations="true"
+    displayDetailsOnTestsThatTriggerErrors="true"
+    displayDetailsOnTestsThatTriggerNotices="true"
+    displayDetailsOnTestsThatTriggerWarnings="true"
+    colors="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory>./test</directory>
+        </testsuite>
+    </testsuites>
+
+    <source>
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+        <exclude>
+            <directory suffix=".php">./src/MezzioInstaller/Resources</directory>
+        </exclude>
+    </source>
+</phpunit>