Added notes about Cilex usage.
Added notes about Cilex usage.

dflydev/dflydev-doctrine-orm-service-provider,c960657/dflydev-doctrine-orm-service-provider,straccio/dflydev-doctrine-orm-service-provider,damiankloip/dflydev-doctrine-orm-service-provider,localheinz/dflydev-doctrine-orm-service-provider