增加英文文档&使用python3-pip (QingdaoU#52)

* Update README.md

* Create README.en.md

* Update README.en.md

* Update README.en.md

* Update README.md

README.en.md

@@ -0,0 +1,42 @@
+[简体中文](https://github.com/QingdaoU/OnlineJudgeDeploy/blob/2.0/README.md) | English
+
+## Environmental preparation (Linux)
+
++ System: Ubuntu 18.04 LTS
+
+1. Install the necessary dependencies
+
+    ```bash
+    sudo apt-get update
+    sudo apt-get install -y vim python3-pip curl git
+    pip3 install --upgrade pip
+    pip install docker-compose
+    ```
+
+2. Install Docker
+
+    Install using script: `sudo curl -sSL get.docker.com | sh`
+
+    Other installation methods: [https://docs.docker.com/install/](https://docs.docker.com/install/)
+
+## Install
+
+1. Please select a location with some surplus disk space and run the following command:
+
+    ```bash
+    git clone -b 2.0 https://github.com/QingdaoU/OnlineJudgeDeploy.git && cd OnlineJudgeDeploy
+    ```
+
+2. Start service
+
+    ```bash
+    docker-compose up -d
+    ```
+
+According to the network speed, the setup can be completed automatically in about 5 to 30 minutes without manual intervention.
+
+Wait for the command execution to complete, and then run `docker ps -a`. When you see that the status of all the containers does not have `unhealthy` or `Exited (x) xxx`, it means OnlineJudge has started successfully.
+
+Access the server's HTTP 80 port or HTTPS 443 port through a browser, and you can start using it. The background management path is `/admin`, the super administrator user name automatically added during the installation process is `root`, and the password is `rootroot`. **If you log in successfully, please change your account password immediately.**.
+
+Don't forget to read the documentation: http://docs.onlinejudge.me/

README.md

@@ -1,11 +1,14 @@
+简体中文 | [English](https://github.com/QingdaoU/OnlineJudgeDeploy/blob/2.0/README.en.md)
+
 ## 环境准备
 
 ### Linux 环境
 
 1. 安装必要的依赖
 
     ```bash
-    sudo apt-get update && sudo apt-get install -y vim python-pip curl git
+    sudo apt-get update && sudo apt-get install -y vim python3-pip curl git
+    pip3 install --upgrade pip
     pip install docker-compose
     ```