chore: add README

Author: zz-jason

Contributing.md

@@ -1,25 +1,42 @@
 # LeanStore
 
+![Architecture](./docs/images/Architecture.jpg)
+
 [LeanStore](https://db.in.tum.de/~leis/papers/leanstore.pdf) is a
 high-performance OLTP storage engine optimized for many-core CPUs and NVMe SSDs.
 Our goal is to achieve performance comparable to in-memory systems when the data
 set fits into RAM, while being able to fully exploit the bandwidth of fast NVMe
 SSDs for large data sets. While LeanStore is currently a research prototype, we
 hope to make it usable in production in the future.
 
-## Build and Run
+## Getting started
 
-Ubuntu 12.04 or newer is required. Install the following packages:
+> NOTE: Ubuntu 22.04 or newer and GCC 12 is required.
 
 ```sh
+# install dependencies
 sudo apt-get update
 sudo apt-get install -y libaio-dev
-```
-
-Build the project with CMake:
 
-```sh
+# build
 cmake -DCMAKE_BUILD_TYPE=Debug -B build -S .
 cmake --build build -j `nproc`
 ctest --test-dir build -j `nproc`
 ```
+
+## Contributing
+
+Contributions are welcomed and greatly appreciated! "good-first-issue" is a good
+start point, see the [Contributing](./Contributing.md) file for details about the contributing
+workflow, develop guide, and contributor communication etc.
+
+## License
+
+LeanStore is under the MIT License. See the [LICENSE](./LICENSE) file for
+details.
+
+## Acknowledgments
+
+Thanks the LeanStore authors for the great
+[leanstore](http://github.com/leanstore/leanstore) project and the idea behind
+it.