docs: update readme

README.md

@@ -3,15 +3,56 @@
 [![CSED434@POSTECH](https://img.shields.io/badge/CSED434-POSTECH-c80150)](https://www.postech.ac.kr/eng)
 [![CSED434@POSTECH](https://img.shields.io/badge/Fall-2023-775E64)](https://www.postech.ac.kr/eng)
 
-**Paranode** is a project developed as part of POSTECH's CSED434 curriculum, dedicated to the implementation of distributed and parallel sorting for key-value records using the Scala programming language. Its primary objective is the development of a robust sorting system tailored for the distribution of extensive datasets, surpassing the limitations of available RAM and storage capacity. Leveraging Scala, Paranode orchestrates parallel data processing across multiple machines, preserving record integrity through key-based sorting.
+**Paranode** is a project developed as part of POSTECH's CSED434 curriculum, dedicated to the implementation of **distributed and parallel sorting system** for key-value records using the Scala programming language. Its primary objective is the development of a robust sorting system tailored for the distribution of extensive datasets, surpassing the limitations of available RAM and storage capacity. Leveraging Scala, Paranode orchestrates parallel data processing across multiple machines, preserving record integrity through key-based sorting.
 
-## Getting Started
+## Usage
 
-### Development Environment
+### Build
 
-#### Install pre-commit hooks
+To build the project, follow these instructions:
+
+1. Clone the repository.
+1. Run `sbt assembly`.
+
+### Run
+
+To launch a master node and worker nodes, follow these steps:
+
+1. Build the project using the instructions above.
+1. Run [`master` script](bin/master) with parameters.
+    - For example, execute `./master <NUMBER_OF_WORKERS>` from the [`bin`](bin) directory.
+1. Run [`worker` script](bin/worker) with parameters.
+    - For example, `./worker <MASTER_HOST>:<MASTER_PORT> -I <INPUT_DIRECTORY> <INPUT_DIRECTORY> <...> -O <OUTPUT_DIRECTORY>` from the [`bin`](bin) directory.
+
+It is possible to run jar files downloaded from releases page instead of building the project.
+
+## Development
+
+### Environment
+
+- Scala 2.13.12
+- SBT 1.9.6
+- Java 20
+
+### Test
+
+To run unit tests, follow the instructions below:
+
+1. Clone the repository.
+1. Run `sbt test`.
+
+To run e2e tests, follow the instructions below:
+
+1. Clone the repository.
+1. Run `sbt e2e/test`.
+
+### Pre-commit hooks
 
 1. Install `pre-commit` package by [instructions](https://pre-commit.com/#installation).
 1. Run `pre-commit install`.
 
 Note that `pre-commit install` should be re-run if [`.pre-commit-config.yaml`](.pre-commit-config.yaml) changed.
+
+## Disclaimer
+
+This project is developed as part of the CSED434 course at POSTECH, and is not intended for production or commercial use. Any usage is at your own risk, and the contributors are not responsible for any potential issues.