Added support for contains comparison in CollectionDriver
Updated documentation with contains comparison
Merged in chives/datasource/dev (pull request #12)

Added support for contains comparison in CollectionDriver
Added contains comparison (alias for 'like') in DoctrineDriver
Merged in chives/datasource/dev (pull request #13)

Added contains comparison (alias for 'like') in DoctrineDriver
Fixed 'in' and 'notIn' comparisons in DoctrineDriver
Updated DoctrineDriver documentation
Merged in chives/datasource/dev (pull request #14)

Fixed 'in' and 'notIn' comparisons in DoctrineDriver