add mailer bundle recipe

wandi/mailer-bundle/1.0/config/packages/wandi_mailer.yaml

@@ -0,0 +1,4 @@
+wandi_mailer:
+    sender:
+        name: 'example'
+        address: 'hello@example.com'

wandi/mailer-bundle/1.0/manifest.json

@@ -0,0 +1,8 @@
+{
+    "bundles": {
+        "Wandi\\MailerBundle\\WandiMailerBundle": ["all"]
+    },
+    "copy-from-recipe": {
+        "config/": "%CONFIG_DIR%/"
+    }
+}