Make examples more consistent.

Move submodule examples into submodule/*

submodule/BUILD

@@ -0,0 +1,21 @@
+load("@bazel_tools//tools/build_rules/go:def.bzl", "go_prefix", "go_binary")
+
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+go_binary(
+	name ="bare",
+	srcs = [ "bare.go" ],
+	deps = [
+	    "//submodule/src:bare",
+	],
+)
+
+go_binary(
+	name ="remote",
+	srcs = [ "remote.go" ],
+	deps = [
+	    "//submodule/src/remote",
+	],
+)