[fix] remove username / fix #60

server/migrations/20191210212618-remove_username.js

@@ -0,0 +1,17 @@
+'use strict';
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.removeColumn('users', 'username')
+  },
+
+  down: (queryInterface, Sequelize) => {
+    /*
+      Add reverting commands here.
+      Return a promise to correctly handle asynchronicity.
+
+      Example:
+      return queryInterface.dropTable('users');
+    */
+  }
+};