Commerce Product Kit

Provides a "field formatter" for the "product reference" or an
"entity reference" fields to add all the commerce products referenced that
field to the cart at once.

SETUP INSTRUCTIONS

1. Download and install the module.
2. Create a content type.
3. Add a multivalued "product reference field" or an "entity reference" field pointing to "Commerce product" entity.
4. Under manage display select "Product kit" as the display formatter for the new field.

TO TEST

1. Create a node of the newly created content type.
2. Select some products in reference field.
3. On the product node page, click on "Add to cart" button.
4. All the products referenced by the field get added to the cart!