upload readme and how-to-build

Signed-off-by: Double Sine <xiao_ai_yu@live.cn>

README.md

@@ -0,0 +1,33 @@
+# navicat-keygen for linux
+
+[中文版README](README.zh-CN.md)
+
+This repository will tell you how Navicat offline activation works.
+
+Previous code is archived in [`linux-archived`](https://notabug.org/doublesine/navicat-keygen/src/linux-archived) branch for the reason that Navicat has come to version 16.x.x which I think should be a milestone and I decide to obsolete previous code and rewrite new one.
+
+When you git-clone this repo, please add `--single-branch` flag so that archived branches won't be cloned to your computer, which saves your time and disk.
+
+```console
+$ git clone -b linux --single-branch https://notabug.org/doublesine/navicat-keygen.git
+```
+
+## 1. How does it work?
+
+see [here](doc/how-does-it-work.md). (WAIT TO BE DONE)
+
+## 2. How to build?
+
+see [here](doc/how-to-build.md).
+
+## 3. How to use?
+
+see [here](doc/how-to-use.md). (WAIT TO BE DONE)
+
+## 4. Contributor
+
+* Deltafox79
+
+* dragonflylee
+
+* zenuo

README.zh-CN.md

@@ -0,0 +1,31 @@
+# navicat-keygen for linux
+
+这份repo将会告诉你Navicat是怎么完成离线激活的。
+
+归档的代码位于 [`linux-archived`](https://notabug.org/doublesine/navicat-keygen/src/linux-archived) 分支。归档原因：Navicat进入16.x.x版本，本项目打算进行重构。
+
+当你clone该仓库的时候，请使用 `--single-branch` 选项，以此避免clone到已被归档的分支、以及节省你的时间和磁盘空间。
+
+```console
+$ git clone -b linux --single-branch https://notabug.org/doublesine/navicat-keygen.git
+```
+
+## 1. 注册机是怎么工作的？
+
+见[这里](doc/how-does-it-work.zh-CN.md)。（待完成）
+
+## 2. 如何编译？
+
+见[这里](doc/how-to-build.zh-CN.md)。
+
+## 3. 如何使用这个注册机？
+
+见[这里](doc/how-to-use.zh-CN.md)。（待完成）
+
+## 4. 贡献者
+
+* Deltafox79
+
+* dragonflylee
+
+* zenuo

doc/how-to-build.md

@@ -0,0 +1,37 @@
+# navicat-keygen for linux - How to build?
+
+[中文版](how-to-build.zh-CN.md)
+
+## 1. Prerequisites
+
+1. Install latest `CMake`:
+
+   ```bash
+   $ sudo apt-get install cmake
+   ```
+
+2. Install `fmt`, `OpenSSL` and `rapidjson`:
+
+   ```bash
+   $ sudo apt-get install libfmt-dev libssl-dev rapidjson-dev
+   ```
+
+## 2. Build
+
+1. Clone:
+
+   ```bash
+   $ git clone -b linux --single-branch https://notabug.org/doublesine/navicat-keygen.git
+   $ cd navicat-keygen
+   ```
+
+2. Build:
+
+   ```bash
+   $ mkdir build
+   $ cd build
+   $ cmake -DCMAKE_BUILD_TYPE=Release ..
+   $ cmake --build . -- -j4
+   ```
+
+   Then you will see two executable files, `navicat-keygen` and `navicat-patcher`, in `build` directory.

doc/how-to-build.zh-CN.md

@@ -0,0 +1,35 @@
+# navicat-keygen for linux - 如何编译？
+
+## 1. 前提条件
+
+1. 安装最新的 `CMake`:
+
+   ```bash
+   $ sudo apt-get install cmake
+   ```
+
+2. 安装 `fmt`、`OpenSSL` 和 `rapidjson`:
+
+   ```bash
+   $ sudo apt-get install libfmt-dev libssl-dev rapidjson-dev
+   ```
+
+## 2. 编译
+
+1. clone仓库:
+
+   ```bash
+   $ git clone -b linux --single-branch https://notabug.org/doublesine/navicat-keygen.git
+   $ cd navicat-keygen
+   ```
+
+2. 编译:
+
+   ```bash
+   $ mkdir build
+   $ cd build
+   $ cmake -DCMAKE_BUILD_TYPE=Release ..
+   $ cmake --build . -- -j4
+   ```
+
+   编译完后你会在build文件夹里看到两个可执行文件 `navicat-keygen` 和 `navicat-patcher`。