chore: use directory argument for source dir and update docs

README.md

@@ -0,0 +1,11 @@
+# intl-extractor
+
+Extracts `next-intl` labels from TypeScript files and merges them to a given output json file.
+
+This automates away manually setting labels in a `source.json` file.
+
+## How to use
+
+```bash
+npx @labdigital/intl-extractor -d ./path/to/files -o ./path/to/output.json
+```

src/bin/cli.ts

@@ -6,9 +6,9 @@ import { processFiles } from "../main";
 
 async function main() {
 	yargs(hideBin(process.argv))
-		.usage("$0 --source [path] --output [json file]")
+		.usage("$0 --directory [path] --output [json file]")
 		.options({
-			source: {
+			directory: {
 				type: "array",
 				alias: "s",
 				describe: "Source directories to process",