feature #3386 [Translation] added method to expose collected message (Grygir)

This PR was merged into the master branch.

Discussion
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[Translation] added method to expose collected message

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes (symfony/symfony#9859)
| Applies to    | all (or 2.4+)
| Fixed tickets |

Commits
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f701f73 [Translation] added method to expose collected message

Author: weaverryan

components/translation/usage.rst

@@ -371,3 +371,25 @@ use for translation::
 
 .. _`L10n`: http://en.wikipedia.org/wiki/Internationalization_and_localization
 .. _`ISO 31-11`: http://en.wikipedia.org/wiki/Interval_(mathematics)#Notations_for_intervals
+
+Retrieving the Message Catalogue
+--------------------------------
+
+In case you want to use the same translation catalogue outside your application
+(e.g. use translation on a client side), it's possible to fetch raw translation messages.
+You just need to specify required locale::
+
+    $messages = $translator->getMessages('fr_FR');
+
+``$messages`` will have the following structure::
+
+    array(
+        'messages' => array(
+            'Hello world' => 'Bonjour tout le monde',
+        ),
+        'validators' => array(
+            'Value should not be empty' => 'Valeur ne doit pas être vide',
+            'Value is too long' => 'Valeur est trop long',
+        ),
+    );
+