Uniforming copyright notices

Closes #37 (closed)

cmake/FindFMILibrary.cmake

+################################################################################
+# Copyright (c) 2020 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+#
+# This program and the accompanying materials are made available under the
+# terms of the Eclipse Public License 2.0 which is available at
+# http://www.eclipse.org/legal/epl-2.0.
+#
+# SPDX-License-Identifier: EPL-2.0
+################################################################################
 # - Find FMILibrary
 # Find the FMILibrary includes and library
 #