Add simple/canonical template virtualenv script

BUG=chromium:708735
TEST=None

Change-Id: I3213495ad7bbf48b8b98fa238fb8f6a896eb20cb
Reviewed-on: https://chromium-review.googlesource.com/470708
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
diff --git a/bin/turtle b/bin/turtle
new file mode 100755
index 0000000..4c491ef
--- /dev/null
+++ b/bin/turtle
@@ -0,0 +1,17 @@
+#!/bin/bash
+# Copyright 2017 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Run turtle graphics inside virtualenv.
+#
+# This script is a canonical template that can be copied to other
+# repositories.
+set -eu
+
+original=$(pwd)
+cd -- "$(readlink -e -- "$(dirname -- "$0")")"
+. ./find_virtualenv.sh
+cd -- "$original"
+
+exec_python_module turtle "$@"