ajout infos pour symfony

PracticeSymfony.md

@@ -25,8 +25,40 @@ Il faut indiquer le paramètre `date.timezone = "Europe/Paris"` dans les fichier
 - `/etc/php5/apache2/php.ini`
 - `/etc/php5/cli/php.ini`
 
-Pour tester la configuration PHP, des tests peuvent être lancés ainsi :
+## Installation
 
 ~~~
-$ php bin/symfony_requirements
+$ echo '{"require": {{"symfony/framework-standard-edition": "~3.3"}}' > composer.json
+$ composer update
+Loading composer repositories with package information
+[...]
+
+$ cd vendor/symfony/framework-standard-edition
+
+$ composer install
+Loading composer repositories with package information
+Installing dependencies (including require-dev) from lock file
+  - Installing doctrine/lexer (v1.0.1)
+    Loading from cache
+[...]
+~~~
+
+Pour tester la configuration, des tests peuvent être lancés ainsi :
+
+~~~
+$ cd vendor/symfony/framework-standard-edition
+$ php bin/symfony_requirements
+Symfony Requirements Checker
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+> PHP is using the following php.ini file:
+  /etc/php/7.0/cli/php.ini
+
+> Checking Symfony requirements:
+  ................................W........
+
+                                              
+ [OK]                                         
+ Your system is ready to run Symfony projects 
+[...]
 ~~~