Allow querying chainfind with sql conditions
Update tests to document 'where' not 'find'
Add where sql doco
Merge pull request #233 from dresende/find-sql

Allow querying chainfind with sql conditions, closes #225
Check for the existence of this.config.query.

Otherwise, if there is no query section in the config then we'll
throw an exception when we check this.config.query.strdates.
Merge pull request #234 from michaelr/sqlite-strdates-bug

Check for the existence of this.config.query in sqlite driver
Merge branch 'master' of github.com:dresende/node-orm2 into mongodb

* 'master' of github.com:dresende/node-orm2:
  Check for the existence of this.config.query.
  Add where sql doco
  Update tests to document 'where' not 'find'
  Allow querying chainfind with sql conditions
Passes connection settings to database drivers

Drivers can change settings if needed. This is needed for example for
now to mongodb driver change primary key to "_id"
Updates mongodb driver to support DBRef and change primary key settings