Create README.md (#3951)

* Create README.md

README.md

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+欢迎来到Lean的Openwrt源码仓库！
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+Welcome to Lean's  git source of OpenWrt and packages
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+中文：如何编译自己需要的 OpenWrt 固件
+-
+注意：
+-
+1. 不要用 root 用户 git 和编译！！！
+2. 国内用户编译前最好准备好梯子
+3. 默认登陆IP 192.168.1.1, 密码 password
+
+编译命令如下:
+-
+1. 首先装好 Ubuntu 64bit，推荐  Ubuntu  14 LTS x64 
+
+2. 命令行输入 sudo apt-get update ，然后输入 
+sudo apt-get -y install build-essential asciidoc binutils bzip2 gawk gettext git libncurses5-dev libz-dev patch python3.5 unzip zlib1g-dev lib32gcc1 libc6-dev-i386 subversion flex uglifyjs git-core gcc-multilib p7zip p7zip-full msmtp libssl-dev texinfo libglib2.0-dev xmlto qemu-utils upx libelf-dev autoconf automake libtool autopoint device-tree-compiler g++-multilib linux-libc-dev:i386 
+
+3. git clone https://github.com/coolsnowwolf/lede 命令下载好源代码，然后 cd lede 进入目录 
+
+4. ./scripts/feeds update -a 
+   ./scripts/feeds install -a
+   make menuconfig 
+
+5. 最后选好你要的路由，输入 make -j1 V=s （-j1 后面是线程数。第一次编译推荐用单线程，国内请尽量全局科学上网）即可开始编译你要的固件了。 
+
+本套代码保证肯定可以编译成功。里面包括了 R9 所有源代码，包括 IPK 的。 
+
+你可以自由使用，但源码编译二次发布请注明我的 GitHub 仓库链接。谢谢合作！
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+特别提示：
+------
+1.源代码中绝不含任何后门和可以监控或者劫持你的 HTTPS 的闭源软件，SSL 安全是互联网最后的壁垒。安全干净才是固件应该做到的； 
+
+2.如有技术问题需要讨论，欢迎加入 QQ 讨论群：OP共享技术交流群 ,号码 297253733 ，加群链接: 点击链接加入群聊【OP共享技术交流群】：[点击加入](https://jq.qq.com/?_wv=1027&k=5yCRuXL "OP共享技术交流群")
+
+3. 想学习OpenWrt开发，但是摸不着门道？自学没毅力？基础太差？怕太难学不会？跟着佐大学OpenWrt开发入门培训班助你能学有所成
+报名地址：[点击报名](http://forgotfun.org/2018/04/openwrt-training-2018.html "报名")
+
+English Version:How to make your Openwrt firmware.
+-
+Note:
+--
+1.DO NOT USE ROOT USER TO CONFIGURE!!!
+
+2.Login IP is 192.168.1.1 and login password is "password".
+
+Let's start!
+---
+First,you need a computer with a linux system.It's better to use Ubuntu 14 LTS 64-bit.
+
+Next you need gcc, binutils, bzip2, flex, python3.5+, perl, make, find, grep, diff, unzip, gawk, getopt, subversion, libz-dev and libc headers installed.
+
+To install these program,please login root users and type "sudo apt-get -y install build-essential asciidoc binutils bzip2 gawk gettext git libncurses5-dev libz-dev patch python3.5 unzip zlib1g-dev lib32gcc1 libc6-dev-i386 subversion flex uglifyjs git-core gcc-multilib p7zip p7zip-full msmtp libssl-dev texinfo libglib2.0-dev xmlto qemu-utils upx libelf-dev autoconf automake libtool autopoint device-tree-compiler g++-multilib linux-libc-dev:i386" in terminal
+
+Third,logout of root users.And type this "git clone https://github.com/coolsnowwolf/lede" in terminal to clone this source.
+
+After these please type "cd lede" to cd into the source.
+
+Please Run "./scripts/feeds update -a" to get all the latest package definitions
+defined in feeds.conf / feeds.conf.default respectively
+and "./scripts/feeds install -a" to install symlinks of all of them into
+package/feeds/.
+ 
+Please use "make menuconfig" to choose your preferred
+configuration for the toolchain and firmware.
+
+Use "make menuconfig" to configure your image.
+
+Simply running "make" will build your firmware.
+It will download all sources, build the cross-compile toolchain, 
+the kernel and all choosen applications.
+
+To build your own firmware you need to have access to a Linux, BSD or MacOSX system
+(case-sensitive filesystem required). Cygwin will not be supported because of
+the lack of case sensitiveness in the file system.
+
+Note: Addition Lean's private package source code in ./package/lean directory. Use it under GPL v3.
+=
+GPLv3 is compatible with more licenses than GPLv2: it allows you to make combinations with code that has specific kinds of additional requirements that are not in GPLv3 itself. Section 7 has more information about this, including the list of additional requirements that are permitted.
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