Update README: add the workflow badge

Signed-off-by: JmPotato <[email protected]>

README.md

@@ -2,6 +2,10 @@
 
 > 'r{}'.format(''.join(sorted('[Pomash](https://github.com/JmPotato/Pomash)'))[::-1]) == 'rsomhaP'
 
+rsomhaP is a simple ready-to-use blog engine written in Rust.
+
+[![Demo Deployment Status](https://github.com/JmPotato/rsomhaP/actions/workflows/fly-deploy.yml/badge.svg)](https://github.com/JmPotato/rsomhaP/actions/workflows/fly-deploy.yml)
+
 ## What is rsomhaP?
 
 [Pomash](https://github.com/JmPotato/Pomash) is a blog engine written in Python, which was almost my first usable project created back in 2014. Although it hosted [my blog](https://ipotato.me) well for the past decade, since its code is somewhat messy and full of "young programmer" mistakes, I decided to rewrite it in Rust to make it more maintainable and as a commemorative project to its former self. Then here it is: rsomhaP.
@@ -16,11 +20,11 @@ But also introduces some new features:
 
 - More secure admin authentication.
 - Use any MySQL-compatible database to store your blog data.
-- Easy to deploy with a simple [Dockerfile](./Dockerfile).
+- Easy to deploy with a single command or a simple [Dockerfile](https://github.com/JmPotato/rsomhaP/blob/main/Dockerfile).
 
 ## Deployment
 
-Edit your [`config.toml`](./config.toml) to your liking, then run:
+Edit your [`config.toml`](https://github.com/JmPotato/rsomhaP/blob/main/config.toml) to your liking, then run:
 
 ```sh
 cargo run --release
@@ -33,6 +37,8 @@ docker build -t rsomhap .
 docker run -p 5299:5299 rsomhap
 ```
 
+Access the admin page at http://{your-deployment-url}/admin to manage your blog. The initial password is the same as the username configured in [`config.toml`](https://github.com/JmPotato/rsomhaP/blob/62dd746dfd6f7413d161a1fde79b82a0589b241b/config.toml#L14), **which you should change after the first login as soon as possible.**.
+
 Technically, you can deploy rsomhaP with modern SaaS infrastructures entirely free from scratch. For example:
 
 - Use [TiDB Serverless](https://www.pingcap.com/tidb-serverless) as the MySQL-compatible database.
@@ -42,4 +48,4 @@ Technically, you can deploy rsomhaP with modern SaaS infrastructures entirely fr
 
 ## License
 
-[MIT](./LICENSE)
+[MIT](https://github.com/JmPotato/rsomhaP/blob/main/LICENSE)