How to add a new package and update .lock file

Author: gajdaw

Diff for: cookbook/workflow/_vendor_deps.rst.inc

@@ -22,6 +22,26 @@ allows you to pin each library to an **exact** version. In fact, if a ``composer
 file exists, the versions inside will override those in ``composer.json``.
 To upgrade your libraries to new versions, run ``php composer.phar update``.
 
+.. tip::
+
+    If you want to add a new package to your application modify ``composer.json``
+    file:
+
+    .. code-block:: json
+
+    {
+        "require": {
+            ...
+            "doctrine/doctrine-fixtures-bundle": "@dev"
+        }
+    }
+
+    and then execute update command for this specific package, i.e.:
+
+    .. code-block:: bash
+
+    $ php cofmposer.phar update doctrine/doctrine-fixtures-bundle
+
 To learn more about Composer, see `GetComposer.org`_:
 
 It's important to realize that these vendor libraries are *not* actually part