Create connection class extends from Connection
and implement methods below.
const Connection = require('node-norm/connection')
class FooAdapter extends Connection {
// implement methods below
}
#load (query, callback = () => {})
#insert (query, callback = () => {})
#update (query)
#drop (query)
#truncate (query)
#delete (query)
#count (query, useSkipAndLimit)
Return value: Number
#_begin ()
#_commit ()
#_rollback ()