substack/testling — pull request #62 by tarruda (2014-01-08 13:59:19+00:00)
Title: Implement preprocess option in the testling field

This option should make simple perform complex transformations in the bundle for testling. For example:

```json
{
"testling": {
"preprocess": {
"command": "./bundle.sh",
"args": ["arg1", "arg2"]
}
}
}

```