Update ember-cli to version 2.4.0 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

ember-cli just published its new version 2.4.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of ember-cli – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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GitHub Release

Setup

1. npm uninstall -g ember-cli -- Remove old global ember-cli
2. npm cache clean -- Clear NPM cache
3. bower cache clean -- Clear Bower cache
4. npm install -g [email protected] -- Install new global ember-cli

Project Update

1. rm -rf node_modules bower_components dist tmp -- Delete temporary development folders.
2. npm install --save-dev [email protected] -- Update project's package.json to use latest version.
3. npm install -- Reinstall NPM dependencies.
4. bower install -- Reinstall bower dependencies.
5. ember init -- This runs the new project blueprint on your projects directory. Please follow the prompts, and review all changes (tip: you can see a diff by pressing d). The most common source of upgrade pain is missing changes in this step.

Changelog

The following changes are required if you are upgrading from the previous
version:

• Users
  • ember new diff
  • Upgrade your project's ember-cli version - docs
  • Migrate testem.json to testem.js.
• Addon Developers
  • ember addon diff
  • No changes required
• Core Contributors
  • No changes required

Community Contributions

• #5438 Add Ember 1.13 to ember-try's default configuration. @kellyselden
• #5477 Fix test suite on Windows @Turbo87
• #5486 [ENHANCEMENT] Add directory option to addon command @Serabe
• #5491 Change "ember i" alias from "ember init" to "ember install" @Turbo87
• #5507 / #5513 [BUGFIX beta] Replace testem.json with testem.js @cibernox
• #5512 Anonymous AMD Support to app.import. @ef4
• #5497 Call destroyApp after handling afterEach options @johnotander
• #5499 Add outputFile support to app.import (see RFC#58) @ro0gr
• #5508 Expose a project.generateTestFile() method to be overwritten by test framework addons @Turbo87
• #5526 Propagates testem errors @stefanpenner
• #5527 Fix many ember test and ember test --server issues @stefanpenner

Thank you to all who took the time to contribute!

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