Upload avatar to s3 on login

server/migrations/20171019071915-user-avatar-url.js

@@ -0,0 +1,12 @@
+module.exports = {
+  up: function(queryInterface, Sequelize) {
+    queryInterface.addColumn('users', 'avatarUrl', {
+      type: Sequelize.TEXT,
+      allowNull: true,
+    });
+  },
+
+  down: function(queryInterface, Sequelize) {
+    queryInterface.removeColumn('users', 'avatarUrl');
+  },
+};