diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..248326b
--- /dev/null
+++ b/.gitmodules
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+[submodule "addons/GPUTrail"]
+	path = addons/GPUTrail
+	url = https://github.com/celyk/GPUTrail.git
diff --git a/addons/GPUTrail b/addons/GPUTrail
new file mode 160000
index 0000000..8e3931c
--- /dev/null
+++ b/addons/GPUTrail
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