workspace setup to use lib/unnittest.bzl

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index e69de29..2643b96 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -0,0 +1,3 @@
+load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
+
+bazel_skylib_workspace()