Update docs for release v2.0.0

Author: Kulbear

CHANGELOG.md

@@ -1,6 +1,36 @@
 # CHANGELOG
 
+**v2.0 (2017.02.13) CN**
+
+1. 升级 **Electron** 至 **V1.4.15**，**Chromium** 至 **54**
+2. 增加了**偏好设置**（感谢设计建议 @**[xiaoyusilen](https://github.com/xiaoyusilen)**）
+3. 增加了英文版本的支持
+4. 增加了一键隐藏窗口（**`ESC`** 键）
+5. 修复了 **macOS** 上窗口最小化时不显示新消息提示的红点（感谢 @wujysh 的贡献）
+6. 修复了聊天框内换行提示仅针对 macOS 的问题
+7. 增加了两个快捷键（感谢 @awmleer 的贡献）
+	- 搜索联系人：**`Ctrl + F`**
+	- 切换到全屏模式：**macOS** 下 **`Ctrl + Command + F`**，**Linux** 下为 **`F11`**
+8. 修复了在 Linux 系统下部分菜单按钮失效的问题（感谢 @qzchenwl 的贡献）
+8. 更新了依赖的第三方库的版本至最新兼容版本
+
+**v2.0 (2017.02.13) EN**
+
+1. Update Electron to V1.4.15, Chromium API level 54
+2. Add **Preference Panel** (Thanks for the design advises from @**[xiaoyusilen](https://github.com/xiaoyusilen)**](https://github.com/xiaoyusilen))
+3. Fully support English UI!
+4. Quick hide windows shortcut (**Press `ESC`**)
+5. Fix **macOS** new message red dot display improperly (Thanks to @wujysh)
+6. Tips in chat window now are adapted with platform
+7. Add two shortcuts (Thanks to @awmleer)
+	- Search Contact人: **`Ctrl + F`**
+	- Toggle Fullscreen Mode: **macOS** **`Ctrl + Command + F`**, **Linux** **`F11`**
+8. Fix unfunctional menu items on **Linux** (Thanks to @qzchenwl)
+8. All thrid party libraries are up-to-date
+
+
 **v1.3 (2016.05.19)**
+
 1. 升级 electron 至 1.1.0， Chrome 至 50.0.2661.102，Node 至 6.1.0 (感谢 @lfs1102 的贡献)
 2. 新增 `brew cask` 安装方式 (最新可下载版本为 v1.2.0)
 3. 新增 Windows 下的安装脚本 (感谢 @3dseals 的贡献)

ISSUE_TEMPLATE.md

@@ -1,13 +1,16 @@
 #### Description
 
-
+First of all, thanks for your attention to open an issue for this project.
+Please notice that if you are requesting a **feature**, then you should give a **brief description** of your request.
+If you are reporting a **bug**, please **follow the template** below.
+A bug report **without detailed information** required will have a **very low priority** and even be **ignored** (closed directly)!
 
 #### Specifications
 
 - Version of Electron (run `$ electron --version`): `v0.0.0`
 - OS: `<OS>`
 - Stack trace from the error message (if any)
 
-``` 
+```
 <Stack trace here>
 ```

LICENSE.md

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Zhongyi Tong
+Copyright (c) 2017 Zhongyi Tong
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal