doc: add sponsors graph

README.md

@@ -144,6 +144,7 @@ pip install --user pdm
 ```
 
 With [asdf-vm](https://asdf-vm.com/)
+
 ```bash
 asdf plugin add github.com/1oglop1/asdf-pdm.git
 asdf install pdm latest
@@ -233,9 +234,11 @@ Packages in the local `__pypackages__` directory will be loaded before the syste
 You'd better not. The packages installed inside `__pypackages__` are OS dependent. Instead, you should keep `pdm.lock`
 in VCS and do `pdm sync` on the target environment to deploy.
 
-### 5. Can I use `pdm` to manage a Python 2.7 project?
+## Sponsors
 
-Sure. The `pdm` itself can be installed under Python 3.7+ only, but it doesn't restrict the Python used by the project.
+<p align="center">
+    <img src="https://cdn.jsdelivr.net/gh/pdm-project/sponsors/sponsors.svg"/>
+</p>
 
 ## Credits
 

README_zh.md

@@ -221,9 +221,11 @@ $ python /home/frostming/workspace/flask_app/app.py
 最好别这样搞，`__pypackages__` 下面安装的包是和操作系统相关的，所以除非是纯 Python 的包，都会有兼容性的问题。你应该把 `pdm.lock`
 纳入版本管理，然后在目标环境中执行 `pdm sync`。
 
-### 5. 我能用`pdm`管理一个 Python 2.7 的项目吗？
+## 赞助
 
-当然可以。只是`pdm`本身的安装需要 Python 版本高于 3.7，它并不限制项目使用的 Python 版本。
+<p align="center">
+    <img src="https://cdn.jsdelivr.net/gh/pdm-project/sponsors/sponsors.svg"/>
+</p>
 
 ## 鸣谢
 

docs/docs/index.md

@@ -330,3 +330,9 @@ extraPaths = ["__pypackages__/<major.minor>/lib/"]
 ## PDM Eco-system
 
 [Awesome PDM](https://github.com/pdm-project/awesome-pdm) is a curated list of awesome PDM plugins and resources.
+
+## Sponsors
+
+<p align="center">
+    <img src="https://cdn.jsdelivr.net/gh/pdm-project/sponsors/sponsors.svg"/>
+</p>