Add links to the community page

community/index.md

@@ -4,4 +4,21 @@ layout: default
 
 # Community
 
-If you'd like to get involved...
+## Documentation
+
+ * [Amazon CloudSearch Developer Guide](http://docs.amazonwebservices.com/cloudsearch/latest/developerguide/):
+   This is the official document of the Amazon CloudSearch, including tutorials and API references.
+
+## GitHub
+
+ * [groonga/gcs](https://github.com/groonga/gcs):
+   The main repository of the Groonga CloudSearch.
+   Bugs and requests are managed on [the issue tracker for this project](https://github.com/groonga/gcs/issues).
+   And, [the wiki of this project](https://github.com/groonga/gcs/wiki) is also available.
+   There are the roadmap, documents to start to develop the Groonga CloudSearch itself, etc.
+
+## Mailing List
+
+ * [groonga's mailing list](http://groonga.org/docs/community.html):
+   Because the Groonga CloudSearch was started as a sub project of the [groonga project](http://groonga.org/),
+   they have strong relationship. Most members of this project are active on the groonga's mailing list too.