Document Java 10 support

Author: vojtechhabarta

README.md

@@ -168,7 +168,7 @@ Architecture
 ```
            (Model)            (TsModel)
 ModelParser  ==>  ModelCompiler  ==>  Emitter
-         |         | 
+         |         |
          V         V
         TypeProcessor
 ```
@@ -193,7 +193,7 @@ Links
 Contributing
 ------------
 
-- current major version supports Java 8 and 9 (version 1 supported Java 7 and 8)
+- current major version supports Java 8, 9 and 10 (version 1 supported Java 7 and 8)
 - build currently only works on Java 8 (JAXB Maven plugin is not compatible with Java 9 yet)
 - keep pull requests small and focused ([10 tips for better Pull Requests](http://blog.ploeh.dk/2015/01/15/10-tips-for-better-pull-requests/))
 - do not add dependencies unless previously discussed in issue