Add sag as a git submodule
Add sag as a git submodule

--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "sag"]
 	path = sag
-	url = git://github.com/sbisbee/sag.git
+	url = https://github.com/sbisbee/sag.git
 

directory:b/sag (new)
--- /dev/null
+++ b/sag