change README

Author: frostyplanet

README.md

@@ -1,91 +1,5 @@
 # Crossfire
 
-[![Build Status](https://github.com/qingstor/crossfire-rs/workflows/Rust/badge.svg)](
-https://github.com/qingstor/crossfire-rs/actions)
-[![License](https://img.shields.io/badge/license-MIT%20OR%20Apache--2.0-blue.svg)](
-https://github.com/qignstor/crossfire-rs#license)
-[![Cargo](https://img.shields.io/crates/v/crossfire.svg)](
-https://crates.io/crates/crossfire)
-[![Documentation](https://docs.rs/crossfire/badge.svg)](
-https://docs.rs/crossfire)
-[![Rust 1.36+](https://img.shields.io/badge/rust-1.36+-lightgray.svg)](
-https://www.rust-lang.org)
+NOTE: This project is no long maintain by qingstor team, has became a personal project.
 
-
-This crate provide channels used between async-async or async-blocking code, in all direction.
-Implmented with lockless in mind, low level is based on crossbeam-channel
-
-## Performance
-
-Faster than channel in std or mpsc in tokio, slightly slower than crossbeam itself (since async overhead to wake up sender or receiver).
-
-Run the benchmark tests to see for yourself:
-
-	cargo test performance --release -- --nocapture --test-threads=1
-
-
-## APIs
-
-
-## Usage
-
-Add this to your `Cargo.toml`:
-
-```toml
-[dependencies]
-crossfire = "0.1"
-```
-
-```rust
-
-extern crate crossfire;
-extern crate tokio;
-
-use crossfire::mpsc;
-
-// async-async
-
-let (tx, rx) = mpsc::bounded_future_both::<i32>(100);
-tokio::spawn(async move {
-    for i in 0i32..10000 {
-        let _ = tx.send(i).await;
-        println!("sent {}", i);
-    }
-});
-
-loop {
-    if let Ok(_i) = rx.recv().await {
-        println!("recv {}", _i);
-    } else {
-        println!("rx closed");
-        break;
-    }
-}
-
-```
-
-mpmc & mpsc package is almost the same, while mpsc has some optimization becauses it assumes only one consumer.
-
-Error types are re-exported from crossbeam-channel.
-
-
-## Compatibility
-
-Supports stable Rust. Mainly tested on tokio-0.2 (Not tested on async-std or other runtime).
-future::selects and timeout work fine, but it takes advantage of runtime behavior not documented by Rust official.
-
-Refer to https://github.com/rust-lang/rust/issues/73002
-
-
-## Memory overhead
-
-While using mp tx or mp rx, there's memory overhead to pass along wakers for pending async producer or consumer.
-Since waker is small, the overhead can be ignored if your channel is busy.
-Canceled wakers will be eventually cleanup by later send/receive event.
-If the channel is used for close notification (which never trigger) in combine with futures::select,
-currently there's hard coded threshold to clean up those canceled wakers.
-
-## Stability
-
-This channel implementation serves in various components of our storage engine, you are
-welcome to rely on it.
+For issue and bug, please jump to https://github.com/frostyplanet/crossfire-rs