Fixes indentation on mysql driver file
Adds a Tools file with some special objects to use in .find() conditions
Exports Tools methods to create the previously created special objects
Changes sql SELECT to support special objects in condition values (fixes #19)

Example:

```js
Person.find({ age: orm.between(20, 30) }, cb);
```

Other special objects:

- orm.eq(val): equal to val
- orm.ne(val): not equal to val
- orm.gt(val): greater than val
- orm.gte(val): greater or equal to val
- orm.lt(val): lesser than val
- orm.lte(val): lesser or equal to val
Fixes new instances not exporting instance id after first save (fixes #18)
Bumps version to 2.0.0-alpha7
Updates Readme to add examples of condition comparisons other than equal
Updates version number in Readme
Removes internal prepare() and creates a real object called ORM
Exports sql tools (operators, etc..) in db (like in orm)

This avoids having to have access to orm object to do a more specific
query operation. This way only the connection object is needed.
Pipes drivers error event to db object

I'm not sure sqlite3 emits errors but both mysql and postgres do
(connection resets for example).
Passes uid column name from model definition down until instance
Updates sqlite driver to accept paths with drive letter (win32) (related to #20)
Allow the table name to be set/overridden (#22) - Paul Dixon
Moves all drivers to a subfolder called DML

DML - Data Manipulation Language

This commit gives space for drivers to create a separate file for DDL
(Data Definition Language) to be able to sync models.
Adds Model.sync()

Driver must implement .sync() or Model.sync() will return an error on
callback.
Adds initial mysql driver sync

Fields are still very static, I need to create options for almost every
property to allow for tweaks (like VARCHAR size, FLOAT/INT size, DATE
instead of DATETIME, ...)
Fixes bug from previous commit having an extra parenthesis
Adds test for Model.sync()

Currently there's only mysql.sync
Moves escapeId from postgres driver to Driver object

I'll need it later on