DOC: Update README with build instructions

Update README with build prerequisites and instructions

README.md

@@ -8,20 +8,29 @@
 
 ## Overview
 
-This is ITK remote module for IO of images stored in zarr-backed [OME-NGFF](https://ngff.openmicroscopy.org/0.4/) file format.
+This is an [ITK](https://itk.org/) external module for IO of images stored in [Zarr](https://zarr.dev/)-backed
+[OME-NGFF](https://ngff.openmicroscopy.org/0.4/) file format.
+
+## Installation
+
+The `itk-ioomezarrngff` Python package is available on the Python Package Index.
 
-## Build/install
-C++ uses `CMake` as the build system. Python packages can be installed from PyPI:
 ```sh
-pip install itk-ioomezarrngff
+> python -m pip install itk-ioomezarrngff
 ```
 
-## Usage
+## Example Usage
+
+### C++
+
 Usage from C++ should not require any special action. In special situations, you might need to invoke:
+
 ```C++
 itk::OMEZarrNGFFImageIOFactory::RegisterOneFactory();
 ```
 
+### Python
+
 In Python, we need to explicitly specify the IO, otherwise DICOM IO will be invoked because it is the built-in default for directories. Example:
 ```python
 import sys
@@ -31,7 +40,44 @@ image = itk.imread(sys.argv[1], imageio=imageio)
 itk.imwrite(image, sys.argv[2], imageio=imageio, compression=False)
 ```
 
-Acknowledgements
+## Build Instructions
+
+ITKIOOMEZarrNGFF is an ITK C++ external module. It may be built with `CMake` and build tools such as
+Ninja, gcc, or MSVC.
+
+In the future ITKIOOMEZarrNGFF may be made available as an ITK remote module for direct
+inclusion in the ITK build process.
+
+### Prerequisites
+
+- [CMake](https://cmake.org/)
+- [Perl](https://www.perl.org/)
+- [NASM](https://www.nasm.us/)
+- An existing C++ build of [ITK](https://itk.org/)
+
+### Building
+
+ITKIOOMEZarrNGFF uses CMake for its build process.
+
+```sh
+# Create the build directory
+> mkdir path/to/ITKIOOMEZarrNGFF-build
+> cd path/to/ITKIOOMEZarrNGFF-build
+
+# Configure the project
+path/to/ITKIOOMEZarrNGFF-build > cmake -DITK_DIR:PATH="path/to/ITK-build" "path/to/ITKIOOMEZarrNGFF"
+
+# Build the project
+path/to/ITKIOOMEZarrNGFF-build > cmake --build . --config "Release"
+```
+
+### Additional Notes
+
+ITKIOOMEZarrNGFF depends on a fork of Google's [Tensorstore](https://github.com/google/tensorstore)
+library for Zarr interoperation. The [InsightSoftwareConsortium/Tensorstore](https://github.com/InsightSoftwareConsortium/tensorstore)
+fork implements additional functionality to maintain in-memory OME-Zarr stores.
+
+## Acknowledgements
 ----------------
 
 ITKIOOMEZarrNGFF was developed in part by with support from: