diff --git a/.gitignore b/.gitignore
index bf52e9b..a61eaea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,7 @@ _testmain.go
 *.test
 *.prof
 vendor/*
+
+# gg vendor management
+vendor/src/*
+vendor/pkg/*
diff --git a/sigtool b/sigtool
new file mode 100755
index 0000000..9fa2451
Binary files /dev/null and b/sigtool differ