Example netlify-cms config.yml file, I used for my 'smoothielicious' project.

config.yml

backend:
  name: git-gateway
  branch: master

media_folder: static/img
public_folder: /img

collections:
  - name: "blog"
    label: "Blog"
    label_singular: "Post"
    folder: "src/pages/blog"
    create: true
    fields:
      - {label: "Template Key", name: "templateKey", widget: "hidden", default: "blog-post.template"}
      - {label: "Title", name: "title", widget: "string"}
      - {label: "Publish Date", name: "date", widget: "datetime"}
      - {label: "Body", name: "body", widget: "markdown"}

  - name: "products"
    label: "Products"
    label_singular: "Product"
    folder: "src/pages/products"
    create: true
    fields:
      - {label: "Template Key", name: "templateKey", widget: "hidden", default: "product-page.template"}
      - {label: "Name", name: "title", widget: "string"}
      - {label: "Image", name: "image", widget: "image"}
      - {label: "Description", name: "description", widget: "string"}
      - {label: "Ingredients", name: "ingredients", widget: "list"}

  - name: "pages"
    label: "Pages"
    files:
      - file: "src/pages/about/index.md"
        label: "About"
        name: "about"
        fields:
          - {label: "Template Key", name: "templateKey", widget: "hidden", default: "about-page.template"}
          - {label: "Title", name: "title", widget: "string"}
          - {label: "Body", name: "body", widget: "markdown"}
      - file: "src/pages/index.md"
        label: "Home"
        name: "home"
        fields:
          - {label: "Template Key", name: "templateKey", widget: "hidden", default: "index-page.template"}
          - {label: "Smoothies Section Heading", name: "smoothiesHeading", widget: "string"}
          - {label: "Posts Section Heading", name: "postsHeading", widget: "string"}
          - {label: "Contact Section Heading", name: "contactHeading", widget: "string"}