Upgrade virtio-drivers to 0.2.0

This project was upgraded with external_updater.
Usage: tools/external_updater/updater.sh update rust/crates/virtio-drivers
For more info, check https://cs.android.com/android/platform/superproject/+/master:tools/external_updater/README.md

Test: TreeHugger
Change-Id: I75e8461868ec2750e8b67bec64896aedadbdeb49
diff --git a/README.md b/README.md
index e3016bb..88b86f9 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # VirtIO-drivers-rs
 
+[![crates.io page](https://img.shields.io/crates/v/aarch64-paging.svg)](https://crates.io/crates/aarch64-paging)
+[![docs.rs page](https://docs.rs/aarch64-paging/badge.svg)](https://docs.rs/aarch64-paging)
 [![CI](https://github.com/rcore-os/virtio-drivers/workflows/CI/badge.svg?branch=master)](https://github.com/rcore-os/virtio-drivers/actions)
 
 VirtIO guest drivers in Rust. For **no_std** environment.
@@ -43,5 +45,20 @@
 
 - x86_64 (TODO)
 
-- [aarch64](./examples/aarch64)
-- [RISCV](./examples/riscv)
+### [aarch64](./examples/aarch64)
+
+```bash
+cd examples/aarch64
+make qemu
+```
+
+### [RISCV](./examples/riscv)
+
+```bash
+cd examples/riscv
+make qemu
+```
+
+You will see device info & GUI Window in qemu.
+
+<img decoding="async" src="https://github.com/rcore-os/virtio-drivers/raw/master/examples/riscv/virtio-test-gpu.png" width="50%">