add docs and license to scripts

scripts/check-change.sh

@@ -1,8 +1,25 @@
 #!/bin/bash -e
 
+# Copyright 2023 Indent Inc
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Check that file matches version committed in Git.
+# Compared against the current HEAD, or the commit specified by GITHUB_SHA.
+# Usage: scripts/check-change.sh <file>
+
 GITHUB_SHA=${GITHUB_SHA:-$(git rev-parse HEAD)}
 
-# Check that file matches the version in Git
 function main() {
 	local files=${@}
 	for f in ${files}; do

scripts/get.sh

@@ -1,5 +1,22 @@
 #!/usr/bin/env bash
 
+# Copyright 2023 Indent Inc
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script downloads named dependencies to the _proto directory.
+# Usage: scripts/get.sh <name> [<name> ...]
+
 set -euo pipefail
 
 SUMS="$(dirname "$(readlink -f "$0")")/get.sha256"