created korean readme

doc/readme_kr.md

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+<a name="readme-top"></a>
+<!-- add these later -->
+<!-- [![MIT License][license-shield]][] -->
+
+<div align="center">
+  <a href="">
+    <img src="./assets/numojo_logo.png" alt="Logo" width="350" height="350">
+  </a>
+
+  <h1 align="center" style="font-size: 3em; color: white; font-family: 'Avenir'; text-shadow: 1px 1px orange;">NuMojo</h1>
+
+  <p align="center">
+    NuMojo는 Python의 NumPy, SciPy와 유사한 Mojo🔥의 수치 컴퓨팅용 라이브러리입니다.
+    <br />
+    <!-- when we create docs -->
+    <a href="https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo-Examples-and-Benchmarks/blob/main/docs/README.md"><strong>Explore the docs» </strong></a>
+    <br>
+    <a href="https://discord.com/channels/1149778565756366939/1149778566603620455"><strong>Check out our Discord» </strong></a>
+    <br />
+    <!-- <br /> -->
+    <!-- <a href="">View Demo</a>
+    ·
+    <a href="">Report Bug</a>
+    ·
+    <a href="">Request Feature</a> -->
+  </p>
+</div>
+