README cleanup

Author: Rand McKinney

README.md

@@ -14,10 +14,8 @@ Install from PyPI by entering this command:
 pip install -U c2pa-python
 ```
 
-This is a platform wheel built with Rust. If your platform is not already supported,
-see the development section for info on how to build from source.
+This is a platform wheel built with Rust that works on Windows, macOS, and most Linux distributions (using [manylinux](https://github.com/pypa/manylinux)). If you need to run on another platform, see [Development](#development) for information on how to build from source.
 
-```
 ## Usage
 
 ### Import
@@ -42,7 +40,7 @@ A media file may contain many manifests in a manifest store. The most recent man
 
 If the optional `data_dir` is provided, the function extracts any binary resources, such as thumbnails, icons, and C2PA data into that directory. These files are referenced by the identifier fields in the manifest store report.
 
-NOTE: For a comprehensive reference to the JSON manifest structure, see the [CAI manifest store reference](https://contentauth.github.io/json-manifest-reference/manifest-reference).
+NOTE: For a comprehensive reference to the JSON manifest structure, see the [Manifest store reference](https://opensource.contentauthenticity.org/docs/manifest/manifest-ref).
 
 ### Add a signed manifest to a media file
 
@@ -63,7 +61,7 @@ The parameters (in order) are:
 - `sign_info`, a `SignerInfo` object instance; see [Generating SignerInfo](#generating-signerinfo) below.
 - `data_dir` optionally specifies a directory path from which to load resource files referenced in the manifest JSON identifier fields; for example, thumbnails, icons, and manifest data for ingredients.
 
-### Create a SignerInfo Instance
+### Create a SignerInfo instance
 
 A `SignerInfo` object contains information about a signature.  To create an instance of `SignerInfo`, first set up the signer information from the public and private key `.pem` files as follows:
 
@@ -103,32 +101,56 @@ manifest_json = json.dumps({
  })
 ```
 
+## Supported file formats
+
+ | Extensions    | MIME type                                           |
+ | ------------- | --------------------------------------------------- |
+ | `avi`         | `video/msvideo`, `video/avi`, `application-msvideo` |
+ | `avif`        | `image/avif`                                        |
+ | `c2pa`        | `application/x-c2pa-manifest-store`                 |
+ | `dng`         | `image/x-adobe-dng`                                 |
+ | `heic`        | `image/heic`                                        |
+ | `heif`        | `image/heif`                                        |
+ | `jpg`, `jpeg` | `image/jpeg`                                        |
+ | `m4a`         | `audio/mp4`                                         |
+ | `mp4`         | `video/mp4`, `application/mp4`                      |
+ | `mov`         | `video/quicktime`                                   |
+ | `png`         | `image/png`                                         |
+ | `svg`         | `image/svg+xml`                                     |
+ | `tif`,`tiff`  | `image/tiff`                                        |
+ | `wav`         | `audio/x-wav`                                       |
+ | `webp`        | `image/webp`                                        |
+
+
 ## Development
 
-It is best to [set up a virtual environment](https://virtualenv.pypa.io/en/latest/installation.html) for development and testing.
+It is best to [set up a virtual environment](https://virtualenv.pypa.io/en/latest/installation.html) for development and testing. To build from source on Linux, install `curl` and `rustup` then set up Python.
 
-To build from source on Linux, install curl and rustup and set up python
+First update `apt` then (if needed) install `curl`:
 
-First update apt
 ```
 apt update
+apt install curl
 ```
 
-Install Rust
-```apt install curl
+Install Rust:
+
+```
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
 source "$HOME/.cargo/env"
 ```
 
-Install Python, pip and venv
+Install Python, `pip`, and `venv`:
+
 ```
 apt install python3
 apt install pip
 apt install python3.11-venv
 python3 -m venv .venv
 ```
 
-Build the wheel for your platform
+Build the wheel for your platform:
+
 ```
 source .venv/bin/activate
 pip install maturin
@@ -140,6 +162,9 @@ python3 -m build --wheel
 ```
 
 ### ManyLinux build
+
+Build using [manylinux](https://github.com/pypa/manylinux) by using a Docker image as follows:
+
 ```
 docker run -it quay.io/pypa/manylinux_2_28_aarch64 bash
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
@@ -155,7 +180,6 @@ git clone https://github.com/contentauth/c2pa-python.git
 cd c2pa-python
 python3 -m build --wheel
 auditwheel repair target/wheels/c2pa_python-0.4.0-py3-none-linux_aarch64.whl 
-
 ```
 
 ### Testing
@@ -171,9 +195,7 @@ pytest
 deactivate
 ```
 
-### Example 
-
-Run the example code like this:
+For example:
 
 ```
 source .venv/bin/activate
@@ -182,31 +204,11 @@ python3 tests/training.py
 deactivate
 ```
 
-## Supported file formats
-
- | Extensions    | MIME type                                           |
- | ------------- | --------------------------------------------------- |
- | `avi`         | `video/msvideo`, `video/avi`, `application-msvideo` |
- | `avif`        | `image/avif`                                        |
- | `c2pa`        | `application/x-c2pa-manifest-store`                 |
- | `dng`         | `image/x-adobe-dng`                                 |
- | `heic`        | `image/heic`                                        |
- | `heif`        | `image/heif`                                        |
- | `jpg`, `jpeg` | `image/jpeg`                                        |
- | `m4a`         | `audio/mp4`                                         |
- | `mp4`         | `video/mp4`, `application/mp4`                      |
- | `mov`         | `video/quicktime`                                   |
- | `png`         | `image/png`                                         |
- | `svg`         | `image/svg+xml`                                     |
- | `tif`,`tiff`  | `image/tiff`                                        |
- | `wav`         | `audio/x-wav`                                       |
- | `webp`        | `image/webp`                                        |
-
+## Release notes
 
-## Change Notes:
+### Version 0.3.0
 
-Version 0.3.0 changes:
-There are some breaking changes to align with future APIs:
+This release includes some breaking changes to align with future APIs:
 - `C2paSignerInfo` moves the `alg` to the first parameter from the 3rd.
 - `c2pa.verify_from_file_json` is now `c2pa.read_file`.
 - `c2pa.ingredient_from_file_json` is now `c2pa.read_ingredient_file`.
@@ -217,12 +219,12 @@ There are some breaking changes to align with future APIs:
 
 ## License
 
-This package is distributed under the terms of both the [MIT license](https://github.com/contentauth/c2pa-rs/blob/main/LICENSE-MIT) and the [Apache License (Version 2.0)](https://github.com/contentauth/c2pa-rs/blob/main/LICENSE-APACHE).
+This package is distributed under the terms of both the [MIT license](https://github.com/contentauth/c2pa-python/blob/main/LICENSE-MIT) and the [Apache License (Version 2.0)](https://github.com/contentauth/c2pa-python/blob/main/LICENSE-APACHE).
 
 Note that some components and dependent crates are licensed under different terms; please check the license terms for each crate and component for details.
 
 ### Contributions and feedback
 
-We welcome contributions to this project.  For information on contributing, providing feedback, and about ongoing work, see [Contributing](https://github.com/contentauth/c2pa-js/blob/main/CONTRIBUTING.md).
+We welcome contributions to this project.  For information on contributing, providing feedback, and about ongoing work, see [Contributing](https://github.com/contentauth/c2pa-python/blob/main/CONTRIBUTING.md).