Add license and license header.
Apache 2.0! There's a dumb script to help with adding headers and
catching files that are missing headers.
Change-Id: Ic4db85b617aa82e5e201ae4bd2e5aff6a029b1b3
diff --git a/src/api.c b/src/api.c
index cd90205..11df107 100644
--- a/src/api.c
+++ b/src/api.c
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2018 Google LLC
+ *
+ * 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
+ *
+ * https://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.
+ */
+
#include "hf/api.h"
#include <assert.h>