fix(build): update package to build after release

.travis.yml

@@ -13,7 +13,7 @@ script:
 - yarn test
 - yarn build
 after_success:
-  - npm run travis-deploy-once "npm run semantic-release"
+  - yarn travis-deploy-once "yarn semantic-release && yarn build"
 branches:
   only:
     - master

scripts/generate-versions.js

@@ -0,0 +1,18 @@
+#!/usr/bin/env node
+const fs = require('fs')
+const fetch = require('node-fetch')
+
+;(async () => {
+  const repoTags = await fetch('https://api.github.com/repos/srowhani/ember-artisans/tags')
+    .then(response => response.json())
+
+  const repoMapping = repoTags.reduce(
+    (acc, { name, commit }) => ({
+      ...acc,
+      [name]: commit
+    })
+  , {})
+
+  fs.writeFileSync('./tests/dummy/public/versions.json', JSON.stringify(repoMapping, null, 2))
+})()
+