Update README.md

Author: AndroidLibrariesYoutube

README.md

@@ -141,7 +141,21 @@ Get values, selected item list,  TAG and error from dialog.
 ## Author
 [Dheeraj Rijhwani (Android Developer)](https://www.youtube.com/channel/UCEhHMXJs1V4mXGfJ4pSWaoA)
 
+## Licence
 
+```
+Copyright 2018 Mate Siede
+
+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.