diff --git a/.gitignore b/.gitignore
index 0f6132d1..e2207f9f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,3 +33,4 @@ lang/fr_FR.po
 lang/it_IT.po
 lang/pt_BR.po
 po/fr/LC_MESSAGES/alternc-admintools.mo
+/nbproject/private/nbproject
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..c5ef260e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "phpunit/lib/PHPUnit"]
+	path = phpunit/lib/PHPUnit
+	url = https://github.com/sebastianbergmann/phpunit.git
diff --git a/phpunit/lib/PHPUnit b/phpunit/lib/PHPUnit
new file mode 160000
index 00000000..04f6eabe
--- /dev/null
+++ b/phpunit/lib/PHPUnit
@@ -0,0 +1 @@
+Subproject commit 04f6eabe5c1068827c93dff2f9913cf3d696affe