fix: Add missing migration

lib/migrations/20150702001020-update-to-0_3_1.js

@@ -0,0 +1,30 @@
+'use strict'
+module.exports = {
+  up: function (queryInterface, Sequelize) {
+    return queryInterface.addColumn('Notes', 'shortid', {
+      type: Sequelize.STRING,
+      unique: true,
+      allowNull: false
+    }).then(function () {
+      return queryInterface.addColumn('Notes', 'permission', {
+        type: Sequelize.STRING,
+        allowNull: false,
+        defaultValue: 0
+      })
+    }).then(function () {
+      return queryInterface.addColumn('Notes', 'viewcount', {
+        type: Sequelize.INTEGER
+      })
+    })
+  },
+
+  down: function (queryInterface, Sequelize) {
+    return queryInterface.removeColumn('Notes', 'viewcount')
+      .then(function () {
+        return queryInterface.removeColumn('Notes', 'permission')
+      })
+      .then(function () {
+        return queryInterface.removeColumn('Notes', 'shortid')
+      })
+  }
+}