diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..f85be07e184375bccda77262dc30e6d9ad832c20
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "rbm"]
+	path = rbm
+	url = https://github.com/boklm/rbm
diff --git a/rbm b/rbm
new file mode 160000
index 0000000000000000000000000000000000000000..64cc0f085badca40c74288d59698ea3b9e50ce9a
--- /dev/null
+++ b/rbm
@@ -0,0 +1 @@
+Subproject commit 64cc0f085badca40c74288d59698ea3b9e50ce9a