[skip ci] Update README

Author: puneetbehl

README.md

@@ -4,7 +4,9 @@
 
 ## Branches
 
-**master** Version of the plugin compatible with Grails 3 / 4 and Hibernate 5.
+**4.0.x** Version of the plugin compatible with Grails 5 and Liquibase 4.6
+
+**3.x** Version of the plugin compatible with Grails 3 / 4 and Hibernate 5.
 
 **2.x**. Version of the plugin compatible with Grails 3 and Hibernate 4.
 
@@ -25,12 +27,14 @@ One popular approach is to have a root changelog named changlog.groovy (or chang
 * 1.x: Grails 2
 * 2.x: Grails 3 with Hibernate 4
 * 3.x: Grails 3 with Hibernate 5
+* 4.0.x Grails 5
 
 ## Documentation
 * Latest https://grails.github.io/grails-database-migration/latest/
 * Grails 2: https://grails.github.io/grails-database-migration/docs/manual/index.html
 * Grails 3 (Hibernate 4): https://grails.github.io/grails-database-migration/2.0.x/index.html
 * Grails 3/4 (Hibernate 5): https://grails.github.io/grails-database-migration/3.0.x/index.html
+* Grails 5 (Hibernate 5): https://grails.github.io/grails-database-migration/4.0.x/index.html
 * Snapshot: https://grails.github.io/grails-database-migration/snapshot/index.html