diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..05dfe9c
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "doc"]
+	path = doc
+	url = git@github.com:sierrasoftworks/iridium.git
+	branch = gh-pages
diff --git a/doc b/doc
new file mode 160000
index 0000000..2283158
--- /dev/null
+++ b/doc
@@ -0,0 +1 @@
+Subproject commit 22831589ad48297d7541dd98cba7f0bfae1b08da