bom: Update documentation to reference new location

Signed-off-by: Stephen Augustus <foo@auggie.dev>

README.md

@@ -99,12 +99,12 @@ Details: [Documentation](https://sigs.k8s.io/promo-tools/cmd/gh2gcs/README.md)
 
 ## End User
 
-### [`bom`](/cmd/bom)
+### [`bom`](https://sigs.k8s.io/bom)
 
 Generate SPDX-compliant Bills of Materials for a software
 project. Supports reading directories, images, files and more.
 
-Details: [Documentation](cmd/bom/README.md) | [SBOM HOWTO](docs/bom/create-a-bill-of-materials.md)
+Details: [Documentation](https://sigs.k8s.io/bom/README.md)
 
 ### [`release-notes`](/cmd/release-notes)
 

cmd/bom/README.md

@@ -1,77 +1,6 @@
-# bom (Bill of Materials)
-## A utility to generate SPDX compliant Bill of Materials manifests.
+# bom
 
-`bom` is a tiny utility that leverages the code written for the Kubernetes
-Bill of Materials project. It enables software authors to generate an 
-SBOM for their projects in a simple, yet powerful way.
+This utility has a [new location](https://sigs.k8s.io/bom).
 
-![terminal demo](../../docs/bom/cast.svg "Terminal demo")
-
-
-`bom` is a general-purpose tool that can generate SPDX packages from
-directories, container images, single files, and other sources. The utility
-has a built-in license classifier that recognizes the 400+ licenses in 
-the SPDX catalog.
-
-Other features include Golang dependency analysis and full `.gitignore`
-support when scanning git repositories.
-
-## Generate your own Bill of Materials
-
-If you are looking for a way to create a bill of materials for your project, we
-have created a 
-[HOWTO guide to generating an SBOM](../../docs/bom/create-a-bill-of-materials.md).
-
-The guide includes information about
-[what a Bill of Materials is](../../docs/bom/create-a-bill-of-materials.md#what-is-a-bill-of-materials),
-[the SPDX standard](../../docs/bom/create-a-bill-of-materials.md#spdx-software-package-data-exchange),
-and instructions to add files, images, directories, and
-other sources to your BOM.
-
-## Compiling bom
-
-To compile bom, clone the Kubernetes Release Engineering repository and
-run the `compile-tools` script:
-
-```
-git clone git@github.com:kubernetes/release.git
-cd release
-./compile-release-tools
-```
-
-## Examples
-
-The following examples show how bom can process different sources to generate
-an SPDX Bill of Materials. Multiple sources can be combined to get a document
-describing different packages.
-
-### Generate an SBOM from the Current Directory:
-
-To process a directory as a source for your SBOM, use the `-d` flag or simply pass
-the path as the first argument to `bom`:
-
-```bash
-bom generate -n http://example.com/ .
-```
-
-### Process a Container Image
-
-This example pulls the kube-apiserver image, analyzes it, and describes in the
-SBOM. Each of its layers are then expressed as a subpackage in the resulting
-document:
-
-```
-bom generate -n http://example.com/ --image k8s.gcr.io/kube-apiserver:v1.21.0 
-```
-
-### Generate a BOM to describe files
-
-You can create an SBOM with just files in the manifest. For that, use `-f`:
-
-```
-bom generate -n http://example.com/ \
-    -f Makefile \
-    -f file1.exe \
-    -f document.md \
-    -f other/file.txt 
-```
+This file is a placeholder to preserve links.
+Please remove after 2022-02-01.

docs/bom/README.md

@@ -1,51 +1,6 @@
-# bom (Bill of Materials)
+# bom
 
-Create SPDX compliant Bill of Materials 
+Documentation about the `bom` tool has a [new location](https://sigs.k8s.io/bom).
 
-- [Summary](#summary)
-- [Installation](#installation)
-- [Usage](#usage)
-
-## Summary 
-
-bom is a little utility that lets software authors generate
-SPDX manifests to describe the contents of a release. The
-SPDX manifests provide a way to list and verify all items
-contained in packages, images, and individual files while
-packing the data along with licensing information.
-
-bom is still in its early stages and it is an effort to open
-the libraries developed for the Kubernetes SBOM for other 
-projects to use.
-
-For a more in depth instructions on how to create an SBOM see
-[Generating a Bill of Materials for Your Project](create-a-bill-of-materials.md)
-
-## Installation
-
-To use bom generate, compile the release engineering tools:
-
-```
-git clone git@github.com:kubernetes/release.git
-cd release
-./compile-release-tools bom
-```
-
-## Usage
-```
-  bom [subcommand]
-```
-
-### Available Commands
-```
-  generate    bom generate → Create SPDX manifests
-  help        Help about any command
-```
-
-### Command line flags
-
-```
-Flags:
-  -h, --help               help for bom
-      --log-level string   the logging verbosity, either 'panic', 'fatal', 'error', 'warning', 'info', 'debug', 'trace' (default "info")
-```
+This file is a placeholder to preserve links.
+Please remove after 2022-02-01.