memo: mention CLIs in the README
<!-- BEGIN-MARKDOWN-TOC -->
* [Introduction](#introduction)
+* [Installation](#installation)
+* [Command line tools](#command-line-tools)
+ * [`ocrd` CLI](#ocrd-cli)
+ * [`ocrd-dummy` CLI](#ocrd-dummy-cli)
* [Packages](#packages)
* [ocrd_utils](#ocrd_utils)
* [ocrd_models](#ocrd_models)
@@ -33,6 +37,12 @@ This repository contains the python packages that form the base for tools within
All packages are also published to [PyPI](https://pypi.org/search/?q=ocrd).
+## Installation
+
+**NOTE** Unless you want to contribute to OCR-D/core, we recommend installation
+as part of [ocrd_all](https://github.com/OCR-D/ocrd_all) which installs a
+complete stack of OCR-D-related software.
+
The easiest way to install is via `pip`:
```sh
@@ -45,6 +55,20 @@ pip install ocrd_modelfactory
All python software released by [OCR-D](https://github.com/OCR-D) requires Python 3.5 or higher.
+## Command line tools
+
+**NOTE:** All OCR-D CLI tools support a `--help` flag which shows usage and
+supported flags, options and arguments.
+
+### `ocrd` CLI
+
+* [OCR-D user guide](https://ocr-d.de/en/use)
+* [Introduction to `ocrd workspace`](https://github.com/OCR-D/ocrd-website/wiki/Intro-ocrd-workspace-CLI)
+
+### `ocrd-dummy` CLI
+
+A minimal [OCR-D processor](https://ocr-d.de/en/user_guide#using-the-ocr-d-processors) that copies from `-I/-input-file-grp` to `-O/-output-file-grp`
+
## Packages
### ocrd_utils
