(freeCodeCamp#119-4)Instead of having the EIN field hard coded there …

…could be a settings section for extra receipt related fields, similar to the create donation items fields and household section on the customer application

server/models/settings.js

@@ -27,6 +27,7 @@ const SettingsSchema = new Schema({
     trim: true
   },
   location: locationSchema,
+  receiptFields: [receiptFieldSchema],
   gmapsApiKey: {
     type: String,
     trim: true,
@@ -55,5 +56,18 @@ const SettingsSchema = new Schema({
   },
 })
 
+const receiptFieldSchema = new Schema({
+  name: {
+    type: String,
+    required: true
+  },
+  value: {
+    type: String,
+    required: true
+  }
+}, {
+  _id: false
+})
+
 export default mongoose.model(modelTypes.SETTINGS, SettingsSchema)
 // TODO: set location on save