bug #3827 Update 'How to Create and store a Symfony2 Project in Git' (nicwortel)

This PR was merged into the 2.3 branch.

Discussion
----------

Update 'How to Create and store a Symfony2 Project in Git'

This pull request updates the cookbook article [How to Create and store a Symfony2 Project in Git](http://symfony.com/doc/current/cookbook/workflow/new_project_git.html#initial-project-setup).

It started with [this question (and its answer by Wouter J) on Stack Overflow](http://stackoverflow.com/q/23437768/1001110).

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all (or 2.3+)
| Fixed tickets | n/a

Commits
-------

3f3d886 Update the tip about the global .gitignore
1baf7e0 Remove dash
6fd5e52 Small improvement
d9f72f9 Some refactoring of the article
083c1f5 Replace static version constraint (2.4.4)
32cee81 Small change in the wording
311f14b Replace numbered list items with #
6a19628 Indent the tip to be on the same level as the list item
34d61eb Update the complete 'Initial Project Setup' paragraph
011e0f0 Update .gitignore example

Author: weaverryan

cookbook/workflow/new_project_git.rst

@@ -20,51 +20,51 @@ Initial Project Setup
 To get started, you'll need to download Symfony and initialize your local
 git repository:
 
-1. Download the `Symfony2 Standard Edition`_ without vendors.
+#. Download the `Symfony2 Standard Edition`_ using Composer:
 
-2. Unzip/untar the distribution. It will create a folder called Symfony with
-   your new project structure, config files, etc. Rename it to whatever you like.
-
-3. Create a new file called ``.gitignore`` at the root of your new project
-   (e.g. next to the ``composer.json`` file) and paste the following into it. Files
-   matching these patterns will be ignored by Git:
-
-   .. code-block:: text
-
-        /web/bundles/
-        /app/bootstrap*
-        /app/cache/*
-        /app/logs/*
-        /vendor/
-        /app/config/parameters.yml
+   .. code-block:: bash
 
-.. tip::
+        $ php composer.phar create-project symfony/framework-standard-edition path/ ~2.3
 
-   You may also want to create a .gitignore file that can be used system-wide,
-   in which case, you can find more information here: `Github .gitignore`_
-   This way you can exclude files/folders often used by your IDE for all of your projects.
+   Composer will now download the Standard Distribution along with all of the
+   required vendor libraries. For more information about downloading Symfony using
+   Composer, see `Installing Symfony using Composer`_.
 
-4. Initialize your Git repository:
+#. Initialize your Git repository:
 
    .. code-block:: bash
 
         $ git init
 
-5. Add all of the initial files to Git:
+#. Add all of the initial files to Git:
 
    .. code-block:: bash
 
         $ git add .
 
-6. Create an initial commit with your started project:
+   .. tip::
+
+      As you might have noticed, not all files that were downloaded by Composer in step 1,
+      have been staged for commit by Git. Certain files and folders, such as the project's
+      dependencies (which are managed by Composer), ``parameters.yml`` (which contains sensitive
+      information such as database credentials), log and cache files and dumped assets (which are
+      created automatically by your project), should not be committed in Git. To help you prevent
+      committing those files and folders by accident, the Standard Distribution comes with a
+      file called ``.gitignore``, which contains a list of files and folders that Git should
+      ignore.
+
+   .. tip::
+
+      You may also want to create a ``.gitignore`` file that can be used system-wide.
+      This allows you to exclude files/folders for all your projects that are created by
+      your IDE or operating system. For details, see `Github .gitignore`_.
+
+#. Create an initial commit with your started project:
 
    .. code-block:: bash
 
         $ git commit -m "Initial commit"
 
-7. Finally, download all of the third-party vendor libraries by
-   executing Composer. For details, see :ref:`installation-updating-vendors`.
-
 At this point, you have a fully-functional Symfony2 project that's correctly
 committed to Git. You can immediately begin development, committing the new
 changes to your Git repository.
@@ -111,6 +111,7 @@ manage this is `Gitolite`_.
 
 .. _`Git`: http://git-scm.com/
 .. _`Symfony2 Standard Edition`: http://symfony.com/download
+.. _`Installing Symfony using Composer`: http://symfony.com/doc/current/book/installation.html#option-1-composer
 .. _`git submodules`: http://git-scm.com/book/en/Git-Tools-Submodules
 .. _`GitHub`: https://github.com/
 .. _`barebones repository`: http://git-scm.com/book/en/Git-Basics-Getting-a-Git-Repository