diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f0233b7
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "SA_NSDataExtensions"]
+	path = SA_NSDataExtensions
+	url = https://github.com/achmizs/SA_NSDataExtensions
diff --git a/SA_NSDataExtensions b/SA_NSDataExtensions
new file mode 160000
index 0000000..04f57f5
--- /dev/null
+++ b/SA_NSDataExtensions
@@ -0,0 +1 @@
+Subproject commit 04f57f59ef78d2605d4835eda60a0a54c88ab088