1) Set up for SVN repository
2)Create three folders trunk, tags and branches (optional)

3)make directory lib/vendor inside trunk folder (or your project folder)

4)CD to lib/vendor folder

5) svn propset svn:externals ‘symfony http://svn.symfony-project.com/tags/RELEASE14_0′ .

6) Type: svn update (it will download all the symfony files)

7)Create project:
php lib/vendor/symfony/data/bin/symfony generate:project projectname

8) Commit everything (If you need you can avoid cache and log from committing)

9) Generate app
php symfony generate:app frontend

10) Change permission of cache and log folder to 777

Then it is done, you can now start your project