Improve zh-doc, 'Handling Enums' section of configuration.
Improve zh-doc, 'objectFactory' and 'plugins' section of configuration.
Update logging.xml

fix a typo
Polishing the en-doc, remove the duplicated word.
Improve zh-doc, 'environments','databaseIdProvider' and 'mappers' sections of configuration.
Merge pull request #250 from htynkn/patch-2

fix a typo in document of logging
Merge pull request #251 from wangdx/master

Improve the rest of configuration doc and one duplicated word in en doc.
Improve zh-doc, beginning of the Mapper.
Improve zh-doc, 'select' of Mapper.
Improve zh-doc, 'insert, update and delete' section of Mapper.
Merge pull request #252 from wangdx/master

Improve zh-doc for Mapper.
Dependency Cleanup / Sonar Cleanup

Minor code cleanup issues reported by sonar.
Updated dependencies.

Fixed derby log location to be under target
Updated maven xsd to proper locatino
Change <name> to match <artifactId> so it works with myEclipse and
follows maven suggested standards.
Updated derby
Updated postgresql to jdbc4.