Add code

1args/features/steps/addition.js

@@ -0,0 +1,12 @@
+import { Given, When, Then } from 'cucumber'
+import { expect } from 'chai'
+
+Given('the start value is {int}', function (int) {
+})
+
+When('I add {int}', function (int) {
+})
+
+Then('the result should be {int}', function (int) {
+  expect(int).to.equal(11)
+})