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[kmjennison]

This should make the project easier to configure and use.

Move settings into a dfp-prebid-setup.yml that looks something like:

orders:
  - bidder_code: somebidder
    advertiser_name: Some DFP Advertiser
    order_name: My HB Order
    targeting:
      placement_names:
        - Some Placement
        - Another Placement
      # Not yet implemented
      ad_unit_names:
       - An ad unit
      # Not yet implemented, but would allow empty targeting
      run_of_network: false
      ## Could later add additional DFP targeting options
    # Or a string preset: "auto" / "dense" 
    prebid_price_buckets:
      - min: 0
        max: 20.00
        precision: 2
        increment: 0.10
    # Optional
    prebid_send_all_bids: false
    number_of_creatives_per_line_item: 4
    currency_code: USD
user:
  email_address: somebody@example.com
  path_to_googleads_file: ./googleads.yaml
options:
  create_advertiser_if_does_not_exist: true
  use_existing_order: false

Use a CLI, dfpprebid, with commands:

• create-config: generates a template dfp-prebid-setup.yml file
• run [ordername] [options]: sets up the order and line items for the order specified, using the config file
  • Args: --config-file-path, --googleads-file-path, --create-advertiser, --use-existing-order