Wok stores the configuration for sub repos in a file.

The file uses YAML syntax.

The file should be stored in the main repo containing all sub repos.

The default path of the file is `wok.yaml` relative to the root dir of the main repo.

Wok will try to find the `wok.yaml` file using alternative paths in the following order:
* `wok.yaml` (the default)
* `wok.yml`
* `Wokfile`

## WOk.yaml Syntax

### First-level Keys

- `version` -- String -- Wokfile Specification version. Must contain "1.0" for now.
- `repos` -- List of Repo Objects -- Each object in the list corresponds to a configured sub repo.

### Repo Object

- `path` -- String -- path to the configured submodule
- `ref` -- String -- current branch configured for the `HEAD` reference of the submodule to point to