fully automate the dev setup with Gitpod. (TanStack#1155)

.gitpod.yml

@@ -0,0 +1,18 @@
+tasks:
+  - name: Auto Build
+    init: |
+      yarn install
+      gp sync-done boot
+    command: yarn run start
+
+  - name: Docs
+    before: cd docs/
+    init: |
+      gp sync-await boot
+      yarn install
+    command: yarn dev
+    openMode: split-right
+
+ports:
+  - port: 3000
+    onOpen: open-preview

CONTRIBUTING.md

@@ -27,6 +27,17 @@ If you have been assigned to fix an issue or develop a new feature, please follo
 - Git stage your required changes and commit (see below commit guidelines)
 - Submit PR for review
 
+## Online one-click setup
+
+You can use Gitpod(An Online Open Source VS Code like IDE which is free for Open Source) for developing online. With a single click it will start a workspace and automatically:
+
+- clone the `react-query` repo.
+- install all the dependencies in `/` and `/docs`.
+- run `yarn start` in the root(`/`) to Auto-build files.
+- run `yarn dev` in `/docs`.
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/from-referrer/)
+
 ## Commit message conventions
 
 `react-query` is using [Angular Commit Message Conventions](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#-git-commit-guidelines).

README.md

@@ -20,6 +20,8 @@ Hooks for fetching, caching and updating asynchronous data in React
   <img alt="" src="https://img.shields.io/github/stars/tannerlinsley/react-query.svg?style=social&label=Star" />
 </a><a href="https://twitter.com/tannerlinsley" target="\_parent">
   <img alt="" src="https://img.shields.io/twitter/follow/tannerlinsley.svg?style=social&label=Follow" />
+</a> <a href="https://gitpod.io/from-referrer/">
+  <img src="https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod" alt="Gitpod Ready-to-Code"/>
 </a>
 
 Enjoy this library? Try the entire [TanStack](https://tanstack.com)! [React Table](https://github.com/tannerlinsley/react-table), [React Form](https://github.com/tannerlinsley/react-form), [React Charts](https://github.com/tannerlinsley/react-charts)