Slow Cooker BBQ Pulled Pork with Homemade Barbeque Sauce

Name: Slow Cooker BBQ Pulled Pork with Homemade Barbeque Sauce
Ingredients: 1 cup ketchup; 1 cup tomato sauce; 1/2 cup and 2 tablespoons brown sugar; 1/2 cup and 2 tablespoons red wine vinegar; 1/4 cup unsulfured molasses; 2 teaspoons hickory-flavored liquid smoke (I omitted); 1 tablespoon butter; 1/4 teaspoon garlic powder; 1/4 teaspoon onion powder; 1/4 teaspoon chili powder; 1/2 teaspoon paprika; 1/4 teaspoon celery seed (I omitted); 1/8 teaspoon ground cinnamon; 1/4 teaspoon cayenne pepper; 1/2 teaspoon salt; 1/2 teaspoon black pepper