Symfony2 Standard Composer Configuration => https://github.com/jhKISS/hugeHzFiles

code.sh

#!/bin/bash
# 2015-05-29
# Symfony 2.3 LTS Standard Installation with Modifications

# Requirements
# 1. Start this script in the parent folder of $rootPathName.
# 2. Choose the value of $rootPathName with PSR in mind.
# 3. The composer.json.template should be modified to fit to the current usage.
# 4. Composer is globally installed.
# 5. The MySQL Database of the new Web Application and the right MySQL User sre created.

# Variables
rootPathName=''
versionLtsString='2.3.*'

# Execution
installF() {
    composer create-project symfony/framework-standard-edition ./$rootPathName/ "$versionLtsString"
    cd $rootPathName;
    mv composer.json composer.json.bak
    cp ../composer.json .
    composer update
}

main() {
    installF || exit 1
}

main
exit 0

#EOF

composer.json

#!/bin/bash

    VENDOR=''
    BUNDLE=''
    DECRIPTION=''
    NAME='',
    MAIL='',
    URLAUTHOR='',
    URLBUNDLE=''
    PROJECTROOT=''

    composer create-project symfony/framework-standard-edition $PROJECTROOT/$BUNDLEBundle "2.3.*"

{
    "name" : "$VENDOR/$BUNDLE",
    "license" : "CC-BY-SA-4.0",
    "type" : "project",
    "description" : "$DESCRIPTION",
    "autoload" : {
        "psr-0" : {
	    "" : [
		    "app",
		    "src",
		    "vendor",
	 	    "vendor/composer"
		],
	    "AppBundle" : [
		    "src/AppBundle",
		    "vendor/composer"
		],
	    "@VENDOR/$BUNDLEBundle" : [
		    "src",
		    "vendor/composer"
	        ]
            },
        "psr-4" : {
	    "" : [
		"app",
		"src",
		"vendor",
		"vendor/composer"
	    ],
	    "AppBundle" : [
		"src/AppBundle",
		"vendor/composer"
	    ],
		"$VENDOR/$BUNDLEBundle" : [
		"src",
		"vendor/composer"
            ]
        }
    },
    "require" : {
	"php" : ">=5.3.3",
	"symfony/symfony" : "2.3.*",
	"doctrine/orm" : "~2.2,>=2.2.3,<2.5",
	"doctrine/dbal" : "<2.5",
	"doctrine/doctrine-bundle" : "~1.2",
	"twig/extensions" : "1.0.*",
	"symfony/assetic-bundle" : "~2.3",
	"symfony/swiftmailer-bundle" : "~2.3",
	"symfony/monolog-bundle" : "~2.4",
	"sensio/distribution-bundle" : "~2.3",
	"sensio/framework-extra-bundle" : "~3.0,>=3.0.2",
	"sensio/generator-bundle" : "~2.3",
        "friendsofsymfony/user-bundle": "2.0.*@dev",
	"incenteev/composer-parameter-handler" : "~2.0"
    },
    "scripts" : {
	"post-install-cmd" : [
	    "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
	],
	"post-update-cmd" : [
	    "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
	    "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ]
    },
    "config" : {
	"bin-dir" : "bin",
	"vendor-dir" : "vendor"
    },
    "minimum-stability" : "stable",
	"extra" : {
	    "symfony-app-dir" : "app",
	    "symfony-web-dir" : "web",
	    "incenteev-parameters" : {
		"file" : "app/config/parameters.yml"
	    },
	    "branch-alias" : {
		"dev-master" : "2.3-dev"
            }
	},
	"keywords" : [
		"$KEYWORDS"
	],
	"authors" : [{
		"name" : "$NAME",
		"email" : "$MAIL",
		"homepage" : "$URLAUTHOR",
		"role" : "developer"
	}],
    "homepage" : "$URLBUNDLE"
}