Project Feedback!

Looks good, this exercise is intended in part to give you an introduction to the general rhythm of this course. The course is entirely project-based with an app being assigned each week and then due the following week. Each project builds on the last to help each engineer learn the practical elements of iOS development and best practices as quickly as possible. We also do a code review for each submitted project once the program begins.

The next step is to continue working on [optional features](https://courses.codepath.org/snippets/ios_university/prework.md#heading-5-optional-add-a-settings-screen-to-the-tip-calculator) and [extending](https://courses.codepath.org/snippets/ios_university/prework.md#heading-6-optional-extend-your-app-improve-ui-add-features) your tip calculator. With regards to extensions to implement, we are looking for developers with an interest in user experience and product development so be sure to focus on additional functional enhancements and/or improving the user interface of the app.

We have a detailed [Prework Feedback Guide](http://courses.codepath.org/snippets/ios_university/feedback_guides/prework_feedback.md) which gives a high-level overview of the concepts covered in the project. Take a moment to go through the Swift 3 style guides and tweak your project to conform to these style conventions.

まず、リンクされている「optional-features」と「Prework Feedback Guide」のページを読み、その後 Swift 3 のスタイルガイドを確認してください。オプションの設定画面を含む、チップ計算機に対する具体的な機能拡張または UI の改善を 1 つ選び、アプリが指定されたスタイル規約に準拠していることを確認してください。

索引モデルが issue の本文から書いたものです。