I am trying to load a sample `chinook.db` database into Cayley. I am using a standart Cayley config file `cayley_example.yml` with small changes specific to `sqlite3`.

Here's [chinook.db](http://www.sqlitetutorial.net/sqlite-sample-database/)

`cayley_example.yml`

```
store:
  # backend to use
  backend: sqlite
  # address or path for the database
  address: "./chinook.db"
  # open database in read-only mode
  read_only: false
  # backend-specific options
  options:
    nosync: false
query:
  timeout: 30s
load:
  ignore_duplicates: false
  ignore_missing: false
  batch: 10000

```

If I execute `./cayley init -c cayley_example.yml`, I get `Error: This QuadStore is not registered.` I tried to follow [this guide](http://oren.github.io/books/cayley/010_foundations/run.html) but `.cfg` files are not supported by the current Cayley version.