see #12: translation of contributing and community

COMMUNITY.md

@@ -0,0 +1,13 @@
+# 交流
+
+本书有以下读者交流群，有兴趣的读者可以加入，加群需正确回答加群密码：
+
+![](qq-group.png)
+
+> 提示: `bW9kZXJuLWNwcC10dXRvcmlhbC1naXRodWI=`
+
+# Community
+
+The book offers a telegram chat group, feel free to join if you are interested:
+
+[![](https://img.shields.io/badge/chat-telegram-blue.svg?style=popout-square&logo=telegram)](https://t.me/joinchat/FEeulBM5OVYzuDI4phQ9Mg)

CONTRIBUTING.md

@@ -1,7 +1,5 @@
 # 如何参与贡献
 
-[![](https://img.shields.io/badge/chat-%E4%BA%A4%E6%B5%81-667ed5.svg)](./assets/community.md) 
-
 ## 提交 Issue
 
 『C++ 11/14/17/20』的 issue 用于追踪书中存在的原则性的描述错误、存在的 `typo` 错误，以及向本书作者提问等。
@@ -38,3 +36,36 @@
 - [ ] 只改动原书正文 `book` 下的部分内容，不涉及代码片段的修改，则无需进行修改
 - [ ] 如果同时还改动了正文中的代码片段，则需要同步 `code` 文件夹下对应的代码片段
 - [ ] 如果改动还涉及习题的设计，则需要同步 `exercises` 文件夹下的内容
+
+# How to contribute
+
+## Submit Issue
+
+C++ 11/14/17 issue is used to track the principle description error, `typo` error, and the questions to the author of the book.
+
+- Usually, you may encounter typos, semantic errors, grammatical errors, and etc. These are all `typo` errors. If an error has caused some obstacles to your reading and you strongly believe that the `typo` will also affect others reading. Then you are very welcome to [submit issue](https://github.com/changkun/modern-cpp-tutorial/issues) to report the `typo` error.
+
+- Do not hasitate to submit a principle error because it prevent wrong knowledge being propagation.
+Report the error immediately by [submitting issue](https://github.com/changkun/modern-cpp-tutorial/issues) to avoid the spread of wrong knowledge.
+
+- If you found some part of the book is confusing, you are very welcome to [submit an issue](https://github.com/changkun/modern-cpp-tutorial/issues) for asking questions.
+
+- The book cannot cover the entire C++ of course, however, you are very welcome to [submit an issue](https://github.com/changkun/modern-cpp-tutorial/issues) for a suggestion if you found some important feature is missing in the book.
+
+## Pull Request
+
+"C++ 11/14/17 On the Fly" is open source so that everyone can contribute to contribute to PR. However, it is required read the following instructions carefully before submitting your pull request:
+
+- Before you submit your pull request, make sure that the [issue list](https://github.com/changkun/modern-cpp-tutorial/issues) already contains the problem you want to solve. If not, please refer to the **Submit Issue** section.
+
+- Make sure your PR has improved the `typo` error of more than 50 words, otherwise please do not submit a PR.
+
+- For a PR that fixes principled errors, please don't hesitate, all readers of the book are very grateful for your contribution!
+
+- If you would like to be a co-author of this book, please send an email to ask: `hi at changkun dot us`.
+
+Since this repository provides a variety of reading approaches, thus make sure you have checked all items in the following checklist:
+
+ - [ ] If you only making changes to the main part of the book (i.e. the `book` folder), and no changes to the code snippet, then you are good to go;
+- [ ] If you also change the code snippet in the main body of the book, then you need to synchronize the corresponding code snippet in the `code` folder;
+- [ ] If you changes also involve the exercises, you also need to synchronize the contents of the `exercises` folder.

DONATE.md

@@ -0,0 +1,19 @@
+---
+title: 资助
+type: about
+order: 1
+---
+
+# 资助
+
+如果你认为本书对你起到了帮助，并希望赞助作者，可以通过下面的二维码给予支持：
+
+|微信|支付宝|
+|:--:|:--:|
+|![](../assets/wechat.jpg) | ![](../assets/alipay.jpg)|
+
+# Donate
+
+I would love if you support me to make the book better:
+
+[![](https://img.shields.io/badge/donate-PayPal-104098.svg?style=popout-square&logo=PayPal)](https://www.paypal.me/ouchangkun/4.99eur)

README-en-us.md

@@ -1,8 +1,8 @@
-<img src="assets/cover-2nd-en.png" alt="logo" height="600" align="right" />
+<img src="assets/cover-2nd-en.png" alt="logo" height="550" align="right" />
 
 # C++11/14/17/20 On the Fly
 
-![](https://img.shields.io/badge/version-v2-green.svg) [![](https://img.shields.io/badge/language-%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87-red.svg)](./README.md) [![](https://img.shields.io/badge/language-English-blue.svg)](./README-en-us.md) [![](https://img.shields.io/badge/$-donate-ff69b4.svg)](./assets/donate.md) [![](https://img.shields.io/badge/chat-community-667ed5.svg)](./assets/community.md) 
+[![](https://img.shields.io/badge/language-简体中文-red.svg?style=flat-square)](./README.md) [![](https://img.shields.io/badge/language-English-blue.svg?style=flat-square)](./README-en-us.md) [![](https://img.shields.io/badge/€-donate-ff69b4.svg?style=flat-square)](./DONATE.md) [![](https://img.shields.io/badge/chat-community-667ed5.svg?style=flat-square)](./COMMUNITY.md)
 
 ## Purpose
 
@@ -16,7 +16,7 @@ In addition, The author would like to encourage that readers should be able to u
 
 ## Targets
 
-- This book assumes that readers are already familiar with traditional C++ (e.g. C++98), at least they do not have any difficulty in reading traditional C++ code. In other words, those who have long experience in traditional C++ and people who desire to quickly understand the features of modern C++ in a short period of time are well suited to read the book;
+- This book assumes that readers are already familiar with traditional C++ (i.e. C++98 or earlier), at least they do not have any difficulty in reading traditional C++ code. In other words, those who have long experience in traditional C++ and people who desire to quickly understand the features of modern C++ in a short period of time are well suited to read the book;
 
 - This book introduces to a certain extent of the dark magic of modern C++. However, these magics are very limited, they are not suitable for readers who want to learn advanced C++. The purpose of this book is offering a quick start for modern C++. Of course, advanced readers can also use this book to review and examine themselves on modern C++.
 
@@ -42,9 +42,11 @@ The source code of the [website](https://changkun.de/modern-cpp) of this book ca
 
 ## Acknowledgements
 
-This book is originally written in Chinese.
+This book was originally written in Chinese by [Changkun Ou](https://changkun.de).
 
-The author has limited time and language skills. If readers find any mistakes of the book or any language improvements, please feel free to open an [Issue](https://github.com/changkun/modern-cpp-tutorial/issues) or start a [Pull request](https://github.com/changkun/modern-cpp-tutorial/pulls).
+The author has limited time and language skills. If readers find any mistakes of the book or any language improvements, please feel free to open an [Issue](https://github.com/changkun/modern-cpp-tutorial/issues) or start a [Pull request](https://github.com/changkun/modern-cpp-tutorial/pulls). For detailed guidelines and checklist, please refer to [How to contribute](CONTRIBUTING.md).
+
+The author would be grateful to all contributors, including but not limited to [Contributors](https://github.com/changkun/modern-cpp-tutorial/graphs/contributors).
 
 ## Licenses
 

README.md

@@ -2,8 +2,7 @@
 
 # 《高速上手 C++11/14/17/20》
 
-[![](https://img.shields.io/badge/language-%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87-red.svg)](./README.md) [![](https://img.shields.io/badge/language-English-blue.svg)](./README-en-us.md) 
+[![](https://img.shields.io/badge/language-%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87-red.svg?style=flat-square)](./README.md) [![](https://img.shields.io/badge/language-English-blue.svg?style=flat-square)](./README-en-us.md) [![](https://img.shields.io/badge/%C2%A5-%E8%B5%9E%E5%8A%A9-ff69b4.svg?style=flat-square)](./DONATE.md) [![](https://img.shields.io/badge/%E4%BA%A4%E6%B5%81-%E7%A4%BE%E5%8C%BA-667ed5.svg?style=flat-square)](./COMMUNITY.md)
-[![](https://img.shields.io/badge/%C2%A5-%E8%B5%9E%E5%8A%A9-ff69b4.svg)](./assets/donate.md)
 
 ## 本书目的
 

assets/community-international.md

@@ -1,5 +0,0 @@
-# Community
-
-This book offers a reader community, you can join this Telegram:
-
-TBA

assets/community.md

@@ -1,7 +0,0 @@
-# 交流
-
-本书有以下读者交流群，有兴趣的读者可以加入，加群需正确回答加群密码：
-
-![](qq-group.png)
-
-> 提示: `bW9kZXJuLWNwcC10dXRvcmlhbC1naXRodWI=`

assets/donate-international.md

@@ -1,5 +0,0 @@
-# Donate
-
-To donate the author:
-
-TBA

assets/donate.md

@@ -1,13 +0,0 @@
----
-title: 资助
-type: about
-order: 1
----
-
-# 资助
-
-如果你认为本书对你起到了帮助，并希望赞助作者，可以通过下面的二维码给予支持：
-
-|微信|支付宝|
-|:--:|:--:|
-|![](../assets/wechat.jpg) | ![](../assets/alipay.jpg)|

website/Makefile

@@ -4,7 +4,7 @@ all: clean
 	cp ../assets/cover-2nd.png ./src/modern-cpp/assets/cover-2nd.png
 	cp ../assets/alipay.jpg ./src/modern-cpp/assets/alipay.jpg
 	cp ../assets/wechat.jpg ./src/modern-cpp/assets/wechat.jpg
-	cp ../assets/donate.md ./src/modern-cpp/about/
+	cp ../DONATE.md ./src/modern-cpp/about/
 	cp -r ../assets/figures ./src/modern-cpp/assets/figures
 	cp -r ../exercises ./src/modern-cpp/book/
 	cp -r ../code ./src/modern-cpp/book/