diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..3069a4e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "External/ReactiveCocoa"]
+	path = External/ReactiveCocoa
+	url = https://github.com/ReactiveCocoa/ReactiveCocoa.git
diff --git a/External/ReactiveCocoa b/External/ReactiveCocoa
new file mode 160000
index 0000000..c4d9103
--- /dev/null
+++ b/External/ReactiveCocoa
@@ -0,0 +1 @@
+Subproject commit c4d9103565ff6b3e05e6d648fbd641a2aa68bd03