Updated dependencies
Fix an obvious typo

Fixed a typo in a reference to the entity manager which caused the following error when running the `sonata:notification:start` command.
Merge pull request #115 from achernev/master

Fix an obvious typo
Updated doc formatting
Merge pull request #116 from Bladrak/doc

Updated doc formatting
Merge pull request #113 from Bladrak/updateComposer

Updated dependencies
Configuration option to disable default consumers
Updated configuration reference
Merge pull request #86 from scheb/consumers-optional

Make SwiftMailerConsumer optional
Add enabled key in admin config