add missing NOTICE file

Author: SethTisue

LICENSE

@@ -198,4 +198,4 @@
    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.
+   limitations under the License.

NOTICE

@@ -0,0 +1,16 @@
+scala-java8-compat
+Copyright (c) 2002-2019 EPFL
+Copyright (c) 2011-2019 Lightbend, Inc.
+
+scala-java8-compat includes software developed at
+LAMP/EPFL (https://lamp.epfl.ch/) and
+Lightbend, Inc. (https://www.lightbend.com/).
+
+Licensed under the Apache License, Version 2.0 (the "License").
+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 software includes projects with other licenses -- see `doc/LICENSE.md`.