update README

README.md

@@ -1,2 +1,14 @@
-# modelator
-Model-based testing tool
+# Modelator
+
+The framework and tools for model-based testing.
+
+
+## License
+
+Copyright © 2021 Informal Systems Inc. and modelator authors.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use the files in this repository 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.