Merge pull request #864 from JohanAblett-Karlsson/add_display_name_to_product_types

Author: abuzuhri

Source/FikaAmazonAPI/AmazonSpApiSDK/Models/ProductTypes/ProductType.cs

@@ -20,6 +20,14 @@ public class ProductType
         [JsonProperty(PropertyName = "name")]
         public string Name { get; set; }
 
+        /// <summary>
+        /// The display name of the Amazon product type.
+        /// </summary>
+        /// <value>The display name of the Amazon product type.</value>
+        [DataMember(Name = "displayName", EmitDefaultValue = false)]
+        [JsonProperty(PropertyName = "displayName")]
+        public string DisplayName { get; set; }
+
         /// <summary>
         /// The Amazon marketplace identifiers for which the product type definition is available.
         /// </summary>