Merge branch '2.3' into 2.4

* 2.3:
  Wrapping create-project in strings on different versions
  See #4091

Conflicts:
	book/installation.rst

Author: weaverryan

book/installation.rst

@@ -57,7 +57,7 @@ Distribution:
 
 .. code-block:: bash
 
-    $ php composer.phar create-project symfony/framework-standard-edition /path/to/webroot/Symfony 2.4.*
+    $ php composer.phar create-project symfony/framework-standard-edition /path/to/webroot/Symfony '2.4.*'
 
 .. tip::
 

cookbook/workflow/new_project_git.rst

@@ -24,7 +24,7 @@ git repository:
 
    .. code-block:: bash
 
-        $ php composer.phar create-project symfony/framework-standard-edition path/ ~2.3
+        $ php composer.phar create-project symfony/framework-standard-edition path/ '~2.3'
 
    Composer will now download the Standard Distribution along with all of the
    required vendor libraries. For more information about downloading Symfony using

quick_tour/the_big_picture.rst

@@ -18,7 +18,7 @@ directory:
 
 .. code-block:: bash
 
-    $ composer create-project symfony/framework-standard-edition myproject/ ~2.4
+    $ composer create-project symfony/framework-standard-edition myproject/ '~2.4'
 
 .. note::