[VOL-1621] Initial documentation framework

Change-Id: Idb7f3e7b859ed3259021aace30a7053a684818e7
diff --git a/git_refs b/git_refs
new file mode 100644
index 0000000..1aba496
--- /dev/null
+++ b/git_refs
@@ -0,0 +1,20 @@
+# git_refs
+#
+# This file contains a list of repos, paths within those repos, and git
+# references (branch/tag/commit hash) that are checked out with `git checkout
+# <ref>` during creation of documentation.
+#
+# - First column is the git repo name
+# - Second column is the subdirectory of the repo to symlink into the
+#   docs directory
+# - Third column is the reference (branch/tag/commit) to checkout
+
+_REPO NAME_             _DIR_    _REF_
+
+pyvoltha                /        master
+bbsim                   /        master
+voltha-go               /        master
+voltha-openolt-adapter  /        master
+voltha-openonu-adapter  /        master
+voltha-protos           /        master
+voltha-system-tests     /        master