diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..737f4d6
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "vendor/shunit2"]
+	path = vendor/shunit2
+	url = https://github.com/kward/shunit2
diff --git a/vendor/shunit2 b/vendor/shunit2
new file mode 160000
index 0000000..46973db
--- /dev/null
+++ b/vendor/shunit2
@@ -0,0 +1 @@
+Subproject commit 46973db9df87bd5fdadea74cb472a99f212a0d3a