Moved middleware/ & schemas/ into api/.

api/schemas/Highscore.js

@@ -0,0 +1,18 @@
+const mongoose = require("mongoose");
+const Schema = mongoose.Schema;
+
+const Highscore = new Schema({
+  name: String,
+  wins: [
+    {
+      color: String,
+      date: Date,
+      wine: {
+        type: Schema.Types.ObjectId,
+        ref: "Wine"
+      }
+    }
+  ]
+});
+
+module.exports = mongoose.model("Highscore", Highscore);