Moved middleware/ & schemas/ into api/.

api/schemas/RequestedWine.js

@@ -0,0 +1,13 @@
+const mongoose = require("mongoose");
+const Schema = mongoose.Schema;
+
+const RequestedWine = new Schema({
+  count: Number,
+  wineId: String,
+  wine: {
+    type: Schema.Types.ObjectId,
+    ref: "Wine"
+  }
+});
+
+module.exports = mongoose.model("RequestedWine", RequestedWine);