Error running example from readme

[jaklaassen]

I might have this misconfigured, but I just can't see it. I used to be able to run this example from the README (https://github.com/ljfranklin/terraform-resource#plan-and-apply-example) with a config like this:

- name: stage-plan
  plan:
  - put: terraform
    params: &terraform_plan_params
      plan_only: true
      terraform_source: "path_to_configs"
      var_files: [tfvars/terraform.tfvars]
- name: stage-apply
  plan:
  - get: terraform
    trigger: false
    passed: [stage-plan]
  - put: terraform
    params:
      plan_run: true

Now I get: "missing required field terraform.source" on the put step of stage-apply.

[ljfranklin]

@jaklaassen whoops, looks like I made some weird omissions last time I updated the README. Just updated the README here to give a more realistic example. Give that a try and let me know if you're still running into issues. Thanks for the heads up!