Transifex translation support

.tx/config

@@ -0,0 +1,8 @@
+[main]
+host = https://www.transifex.com
+
+[silverstripe-dms.master]
+file_filter = lang/<lang>.yml
+source_file = lang/en.yml
+source_lang = en
+type = YML

README.md

@@ -115,4 +115,18 @@ Note: Both operations copy the existing file.
 	// Removing tags is abstracted as well
 	$doc->removeTag('category', 'keyboard'); 
 	$doc->removeTag('category', 'input device'); 
-	$doc->removeAllTags();
+	$doc->removeAllTags();
+
+## Contributing
+
+### Translations
+
+Translations of the natural language strings are managed through a
+third party translation interface, transifex.com.
+Newly added strings will be periodically uploaded there for translation,
+and any new translations will be merged back to the project source code.
+
+Please use [https://www.transifex.com/projects/p/silverstripe-dms/](https://www.transifex.com/projects/p/silverstripe-dms/) to contribute translations,
+rather than sending pull requests with YAML files.
+
+See the ["i18n" topic](http://doc.silverstripe.org/framework/en/trunk/topics/i18n) on doc.silverstripe.org for more details.