update README, add CHANGELOG

CHANGELOG.md

@@ -0,0 +1,12 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## v0.1.0 - 2025-02-21
+
+Initial release:
+
+* release `asninfo` binary tool that can generate ASN information
+    * support export to local JSON/JSONL files
+    * support upload to S3-compatible object storage systems
+    * support simplified format

README.md

@@ -3,34 +3,48 @@
 This script fetches the most up-to-date ASN information and saves as JSON or JSONL file and may upload to S3/R2 bucket
 if environment variables are set.
 
+## Install
+
+### Using `cargo`
+
+```bash
+cargo install asninfo
+```
+
+### Using `homebrew` on macOS
+
+```bash
+brew install bgpkit/tap/asninfo
+```
+
+### Using [`cargo-binstall`](https://github.com/cargo-bins/cargo-binstall)
+
+Install `cargo-binstall` first:
+
+```bash
+cargo install cargo-binstall
+```
+
+Then install `asninfo` using `cargo binstall`
+
+```bash
+cargo binstall asninfo
+```
+
 ## Usage
 
 ```shell
-➜  asninfo git:(main) ✗ cargo run --release -- --help
-    Finished `release` profile [optimized] target(s) in 0.08s
-     Running `target/release/asninfo --help`
+A utility tool to export ASN information to JSON files.
+
+
 Usage: asninfo [OPTIONS] [PATH]
 
 Arguments:
   [PATH]  Export data path [default: ./asninfo.jsonl]
 
 Options:
   -u, --upload      Flag to enable upload to S3-compatible object storage
-                    Required environment variables:
-                    - `AWS_REGION`
-                    - `AWS_ENDPOINT`
-                    - `AWS_ACCESS_KEY_ID`
-                    - `AWS_SECRET_ACCESS_KEY`
-                    - `ASNINFO_UPLOAD_PATH`: full path with `s3` or `r2` prefix, such as `r2://spaces/broker/asninfo.jsonl`
-  -s, --simplified  Simplified format, including the following fields:
-                    - asn
-                    - as_name
-                    - org_id
-                    - org_name
-                    - country_code
-                    - country_name
-                    - data_source
-      --debug       Print debug information
+  -s, --simplified  Simplified format
   -h, --help        Print help
   -V, --version     Print version
 ```
@@ -43,3 +57,6 @@ Options:
 - `AWS_SECRET_ACCESS_KEY`
 - `ASNINFO_UPLOAD_PATH`: full path with `s3` or `r2` prefix, such as `r2://spaces/broker/asninfo.jsonl`
 
+## Built with ❤️ by BGPKIT Team
+
+<a href="https://bgpkit.com"><img src="https://bgpkit.com/Original%20Logo%20Cropped.png" alt="https://bgpkit.com/favicon.ico" width="200"/></a>