Refactores Schema_Tools for Doctrine/ORM and Doctrine/MongoDB-ODM.
Added config settings for "doctrine".
Added config for "schema_tool" service id.
Implemented autoloading of FixtureSets from default path 'DataFixtures/*Set.php'.
Moved LICENSE file to project root.
Updated README of new features.
Added require-dev dependencies.
Fixed typo. Was gone while rebasing.