minor #891 Move the placeholder for assets version in config.yml (kachkaev)
minor #891 Move the placeholder for assets version in config.yml (kachkaev)

This PR was submitted for the master branch but it was merged into the 2.7 branch instead (closes #891).

Discussion
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Move the placeholder for assets version in config.yml

Uncommenting ’#assets_version: SomeVersionScheme’ will cause an exception in Symfony 2.7+ The parameter was moved to framework -> asserts.

Commits
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d1cafee Move the placeholder for assets version in config.yml

debruyne0/symfony,vincentaubert/symfony-standard,stof/symfony-standard,GulDmitry/music-diff,kmelia/fresh-symfony,GulDmitry/music-diff,gencer/symfony-standard,formapro-forks/api-basic,fabpot/symfony-standard,Spea/symfony-standard,Tobion/symfony-standard,ovelasquez/ussi,fduch/symfony-standard-workflow,symfony-cmf/standard-edition,apnet/symfony-standard-edition,stof/symfony-standard,formapro-forks/api-basic,egeloen/symfony-standard,lyrixx/symfony-standard,simonjcarr/symfony_rest,ovelasquez/ussi,simonjcarr/symfony_rest,gencer/symfony-standard,the-software-factory/superhero-api,vincentaubert/symfony-standard,uttam-vi/pardawala,debruyne0/symfony,proteichik/testApp,Spea/symfony-standard,dunglas/symfony-standard,jakzal/symfony-standard,Tobion/symfony-standard,fduch/symfony-standard-workflow,shamcode/symfony-testing,jakzal/symfony-standard,proteichik/testApp,kmelia/fresh-symfony,GulDmitry/music-diff,apnet/symfony-standard-edition,symfony/symfony-standard,the-software-factory/superhero-api,uttam-vi/pardawala,dunglas/symfony-standard,uttam-vi/pardawala,ovelasquez/ussi,symfony-cmf/standard-edition,symfony/symfony-standard,kmelia/fresh-symfony,apnet/symfony-standard-edition,black-project/black-standard,fabpot/symfony-standard,GulDmitry/music-diff,shamcode/symfony-testing,egeloen/symfony-standard,lyrixx/symfony-standard,black-project/black-standard