docs: Add license note

Signed-off-by: Fabian Deutsch <[email protected]>

README.md

@@ -86,3 +86,22 @@ therefore required. For best results, use this path:
    need to be run separately.
  * `cluster/quickcheck.sh`: This script will run a series of tests to ensure
    the system is set up correctly.
+
+## License
+
+KubeVirt is distributed under the
+[Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0.txt).
+
+   Copyright 2016
+
+   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.