Merge pull request #24 from Ashrey/master

Move update SQL string generation
Merge pull request #25 from Ashrey/master

Move Update Generator
Merge pull request #26 from Ashrey/master

Mejoras varias
Merge pull request #27 from Ashrey/master

Mejoras en el literecord
Merge pull request #28 from Ashrey/master

Separate method
Merge pull request #29 from Ashrey/master

Mejoras de metodos
Change method name and use self::dbh() instead of Db::get()
Añadido atributo database al LiteRecord
Unused code
Update phpdoc
Refractor LiteRecord in 2 classes
Deleted smallcase(). getTable() return smallcase by default. Change getTable() for use any notation.