📝 Add documentation

README.md

@@ -1,2 +1,55 @@
 # eslint-generate-todo
 Tool for generating eslint todo files
+
+# Installation
+
+```bash
+yarn add --dev eslint-generate-todo
+```
+
+# Usage
+
+Generate a `.eslintrc-todo` file using the `eslint-generate-todo` CLI:
+
+```bash
+eslint-generate-todo
+```
+
+You may then extend the resulting `.eslintrc-todo` file in your eslint config:
+
+```yaml
+extends:
+  - .eslintrc-todo.yml
+```
+
+## CLI
+
+Run `eslint-generate-todo` through the CLI with this script. Run it with `--help` to see the options. Files use glob syntax and may be specified multiple times.
+
+```bash
+eslint-generate-todo [files...]
+```
+
+### `--format`
+
+If you want to specify the file format of the output `.eslintrc-todo` file, you can run `eslint-generate-todo` with the `--format` flag (or `-f`), followed by either `yaml` or `json`. By default `eslint-generate-todo` outputs to `yaml`.
+
+```bash
+eslint-generate-todo --format json
+```
+
+### `--off`
+
+To set rule overrides in the generated `.eslintrc-todo` file to `"off"` instead of `"warn"`, you can run `eslint-generate-todo` with the `--off` (or `-o`) flag.
+
+```bash
+eslint-generate-todo --off
+```
+
+### `--path`
+
+To change the output path of the generated `.eslintrc-todo` file, you can run `eslint-generate-todo` with the `--path` (or `p`) flag, followed by the project root-relative path.
+
+```bash
+eslint-generate-todo --path config/eslint-overrides.yml
+```