📝 docs: add and test readme

Signed-off-by: Nathaniel Starkman <nstarman@users.noreply.github.com>

Author: nstarman

README.md

@@ -0,0 +1,52 @@
+<h1 align='center'> array-api-typing </h1>
+<h3 align="center">Runtime-Checkable Type Annotations for the Array APi</h3>
+
+---
+
+## Installation
+
+```bash
+pip install array-api-typing
+```
+
+<details>
+  <summary>using <code>uv</code></summary>
+
+```bash
+uv add array-api-typing
+```
+
+</details>
+<details>
+  <summary>from source, using pip</summary>
+
+```bash
+pip install git+https://https://github.com/data-apis/array-api-typing.git
+```
+
+</details>
+<details>
+  <summary>building from source</summary>
+
+```bash
+cd /path/to/parent
+git clone https://https://github.com/data-apis/array-api-typing.git
+cd array-api-typing
+pip install -e .  # editable mode
+```
+
+</details>
+
+### Quick example
+
+```pycon
+>>> import array_api_typing as arrt
+>>> import numpy as np
+
+>>> def func(x: arrt.HasNamespace) -> arrt.HasNamespace:
+...    return x
+
+>>> func(np.array([1, 2, 3]))
+array([1, 2, 3])
+
+```

pyproject.toml

@@ -43,11 +43,12 @@
     "lefthook>=1.11.13",
 ]
   test = [
+    "numpy>=2.2.6",
     "pytest>=8.3.3",
     "pytest-cov>=3",
     "pytest-github-actions-annotate-failures>=0.3.0",
     "sybil>=8.0.0",
-  ]
+]
 
 
 [tool.hatch]