Using Peewee with Twisted
I have no plans to support twisted but I'd accept s pull request for a playhouse module. If you're interested, I'd start here: 

http://docs.peewee-orm.com/en/latest/peewee/database.html#adding-a-new-database-driver

At the moment, there is no way to use peewee with async Twisted.

Twisted handles database connections using [ConnectionPool](https://twistedmatrix.com/documents/14.0.0/api/twisted.enterprise.adbapi.ConnectionPool.html)

```
from twisted.enterprise import adbapi
db= adbapi.ConnectionPool("MySQLdb", 
    host = "",
    user = "",
    passwd = "",
    db = "")

q = db.runQuery("CREATE TABLE test(msg VARCHAR(100))")
q.addCallBack(asyncCallBackFunctionHere)
```

Would it be possible to have support for ConnectionPool? It has about 4 methods that are used to execute and return data.
