change tree structure for PSR0

lavoisiercli/composer.json

+{
+    "name": "ccin2p3/lavoisier",
+    "version": "dev-master"
+}

lavoisiercli/phpunit.xml.dist

+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="vendor/autoload.php"
+>
+    <testsuites>
+        <testsuite name="Twig Extensions Test Suite">
+            <directory>./test/Twig/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory suffix=".php">./lib/Twig/</directory>
+        </whitelist>
+    </filter>
+</phpunit>