[Doc] Add Individual developers' contribution acknowledgment in README (

#773)

README.md

@@ -109,5 +109,15 @@ Slack (For developer quick communication):
 Contact us via dingtalk, wechat, email and telephone:
 ![contacts](./docs/images/contact-en.png)
 
+## 7. Acknowledgement
+
+Thanks to all the individual developers who have contributed to this repository, which are listed below.
+
+<a href="https://github.com/TuGraph-family/tugraph-db/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=TuGraph-family/tugraph-db" />
+</a>
+
+Made with [contrib.rocks](https://contrib.rocks).
+
 
 

README_CN.md

@@ -95,7 +95,7 @@ $ make package
   </tr>
 </table>
 
-## 5. 联系我们
+## 6. 联系我们
 
 官网: [tugraph.tech](https://tugraph.tech)
 
@@ -105,3 +105,14 @@ Slack (在线开发沟通):
 通过钉钉群、微信群、微信公众号、邮箱和电话联系我们:
 ![contacts](./docs/images/contact-zh.png)
 
+## 7. 致谢
+
+感谢对这个项目做过贡献的个人开发者，名单如下：
+
+<a href="https://github.com/TuGraph-family/tugraph-db/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=TuGraph-family/tugraph-db" />
+</a>
+
+生成 By [contrib.rocks](https://contrib.rocks).
+
+