Initial commit

Set up repository with initial documentation for SIMD-accelerated
NumPy routines.

- Add README.md with project overview
- Add LICENSE file

Author: seiko2plus

LICENSE

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+Copyright (c) 2005-2025, NumPy Developers.
+All rights reserved.
+
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+met:
+
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+       notice, this list of conditions and the following disclaimer.
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+       disclaimer in the documentation and/or other materials provided
+       with the distribution.
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README.md

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+# NumPy SIMD Routines
+
+A collection of C++ SIMD implementations for numerical operations in NumPy.
+
+> **Note:** This project is in early stages of development. APIs, structure, and functionality may change significantly as the project evolves.
+
+## Overview
+
+`numpy-simd-routines` is a collection of C++ header files that provide optimized SIMD (Single Instruction Multiple Data) implementations for common numerical operations used in NumPy.
+The library consists of inline functions that can be easily integrated into NumPy or other numerical computing projects.
+
+These routines are developed outside the main NumPy repository for two primary reasons:
+
+1. To share optimized SIMD implementations with other projects in the Python numerical computing ecosystem, enabling code reuse across multiple libraries
+2. To speed up development by focusing on SIMD optimizations separately from the main NumPy codebase
+
+As a collection of header files, it can be easily integrated into NumPy or other numerical computing projects without build dependencies, simplifying adoption and maintenance.