[LICENSE] used addlicense to add licenses to all source files
diff --git a/scripts/generate_fill.py b/scripts/generate_fill.py
index 0a84a48..d939cef 100755
--- a/scripts/generate_fill.py
+++ b/scripts/generate_fill.py
@@ -1,4 +1,18 @@
#!/bin/env python3
+# Copyright 2020 Efabless Corporation
+#
+# 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.
+
#
# generate_fill.py ---
#
