Complete example of usage (#15)

simplifies copy and paste
diff --git a/README.md b/README.md
index 97d41b4..256f2a5 100644
--- a/README.md
+++ b/README.md
@@ -19,9 +19,32 @@
 
 # Usage
 
-Create GitHub workflow in project with content:
+Create GitHub workflow in project file:
+
+```
+.github/workflows/maven-verify.yml
+```
+
+ with content:
 
 ```yaml
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+
 name: Verify
 
 on: