Merge pull request #224 from domaframework/description-doma-3

Add a description about Doma 3

Author: nakamura-to

README.md

@@ -3,22 +3,33 @@ Doma [![Build Status](https://travis-ci.org/domaframework/doma.svg?branch=master
 
 [![Join the chat at https://gitter.im/domaframework/doma](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/domaframework/doma?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-Doma is a Database access framework for Java 8. 
+Doma is a Database access framework for Java. 
 
 Doma uses [Pluggable Annotation Processing API][apt] to generate source code and validate sql mappings at **compile time**.
 
 ![doma](https://github.com/domaframework/doma/blob/master/docs/sources/images/doma.png)
 
-Documentation
--------------
+Major versions
+---------------------
 
-http://doma.readthedocs.org/
+| Version                                | Status            | Repository                             | Brunch |
+| -------------------------------------- | ----------------- | -------------------------------------- | ------ |
+| [Doma 1](http://doma.seasar.org/)      | stable            | https://github.com/seasarorg/doma      | master |
+| [Doma 2](http://doma.readthedocs.org/) | stable            | https://github.com/domaframework/doma/ | master |
+| Doma 3                                 | under development | https://github.com/domaframework/doma/ | doma-3 |
 
-Notice
---------
 
-- This is Doma 2.
-- The old version Doma 1  is maintained at [seasarorg/doma](https://github.com/seasarorg/doma). 
+Compatibility matrix
+-------------------------
+
+|         | Doma 1 | Doma 2 | Doma 3 |
+| ------- | ------ | ------ | ------ |
+| Java 6  |   v    |        |        |
+| Java 7  |   v    |        |        |
+| Java 8  |   v    |   v    |        |
+| Java 9  |        |   v    |        |
+| Java 10 |        |   v    |        |
+| Java 11 |        |        |   v    |
 
 License
 -------