Added License badge

Chessray · web-flow · commit 4f68181d6d5b · 2019-10-04T14:34:59.000+01:00
diff --git a/README.md b/README.md
@@ -1,2 +1,4 @@
 # mapstruct-spring-additions
 Helpful additions to MapStruct when using the Spring Framework.
+
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
