diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c531721
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "calfbox"]
+	path = calfbox
+	url = https://github.com/kfoltman/calfbox
diff --git a/calfbox b/calfbox
new file mode 160000
index 0000000..a229ed7
--- /dev/null
+++ b/calfbox
@@ -0,0 +1 @@
+Subproject commit a229ed7bf90a90cdcb1fd313a08bf5564f6e52a3