Move Acme demo bundle configuration to sensio DistributionBundle
feature #645 Move Acme demo bundle configuration to sensio DistributionBundle (romainneutron)

This PR was squashed before being merged into the 2.4-dev branch (closes #645).

Discussion
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Move Acme demo bundle configuration to sensio DistributionBundle

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| License       | MIT

This is related to https://github.com/sensiolabs/SensioDistributionBundle/pull/120

Commits
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0d8d160 Move Acme demo bundle configuration to sensio DistributionBundle