Merge pull request #207 from jorilallo/allow-null-username

Allow null username

server/migrations/20170904202454-allow-null-username.js

@@ -0,0 +1,15 @@
+module.exports = {
+  up: async function(queryInterface, Sequelize) {
+    await queryInterface.changeColumn('users', 'username', {
+      type: Sequelize.STRING,
+      allowNull: true,
+    });
+  },
+
+  down: async function(queryInterface, Sequelize) {
+    await queryInterface.changeColumn('users', 'username', {
+      type: Sequelize.STRING,
+      allowNull: false,
+    });
+  },
+};