update ubuntu installation (#66)

* update ubuntu installation

* fix typo

Author: HarrisChu

README.md

@@ -25,6 +25,8 @@ The main features:
 
 ### prepare
 
+#### Centos7
+
 ```bash
 sudo yum install -y git \
                     make \
@@ -40,6 +42,20 @@ sudo yum install -y git \
 
 ```
 
+#### Ubuntu
+
+```bash
+sudo apt-get install -y \
+     git \
+     wget \
+     python3-pip \
+     python \
+     openjdk-8-jdk \
+     maven 
+
+export JAVA_HOME=/usr/lib/jvm/default-java/
+```
+
 ```bash
 git clone https://github.com/vesoft-inc/nebula-bench.git 
 cd nebula-bench

README_cn.md

@@ -22,6 +22,8 @@
 
 ### 安装准备
 
+#### Centos7
+
 ```bash
 sudo yum install -y git \
                     make \
@@ -38,6 +40,20 @@ sudo yum install -y git \
 
 ```
 
+#### Ubuntu
+
+```bash
+sudo apt-get install -y \
+     git \
+     wget \
+     python3-pip \
+     python \
+     openjdk-8-jdk \
+     maven 
+
+export JAVA_HOME=/usr/lib/jvm/default-java/
+```
+
 ```bash
 git clone https://github.com/vesoft-inc/nebula-bench.git 
 cd nebula-bench

requirements.txt

@@ -1,4 +1,3 @@
 Jinja2
 click
 python-dotenv
-pandas