Add enjin

enjin.in.json

@@ -0,0 +1,25 @@
+{
+	"$schema": "https://json-schema.org/draft/2020-12/schema",
+	"title": "Enjin NFT metadata extension",
+	"$id": "/enjin",
+
+	"type": "object",
+	"properties": {
+		"simple_property": "example value",
+		"rich_property": {
+			"name": "Name",
+			"value": "123",
+			"display_value": "123 Example Value",
+			"class": "emphasis",
+			"css": {
+				"color": "#ffffff",
+				"font-weight": "bold",
+				"text-decoration": "underline"
+			}
+		},
+		"array_property": {
+			"name": "Name",
+			"value": [1,2,3,4],
+			"class": "emphasis"
+		}
+	}

test_valid.json

@@ -14,8 +14,8 @@
 		"abcdef0123456789abcdef0123456789abcdef00abcdef0123456789abcdef00"
 	],
 	"attributes": {
-		"inky": "pinky",
-		"blinky": "clyde"
+		"trait_type": "Rating",
+		"value": 2.2
 	},
 	"namespace": "schmame",
 	"attachments": [