chore: improve npm package metadata and add README badges (#10)

Expand the package description and keywords for npm discoverability, and add
CI, version, downloads, types, and license badges to the README.

Author: merencia

README.md

@@ -1,5 +1,11 @@
 # cron-translate
 
+[![CI](https://github.com/node-cron/cron-translate/actions/workflows/ci.yml/badge.svg)](https://github.com/node-cron/cron-translate/actions/workflows/ci.yml)
+[![npm version](https://img.shields.io/npm/v/cron-translate.svg)](https://www.npmjs.com/package/cron-translate)
+[![npm downloads](https://img.shields.io/npm/dm/cron-translate.svg)](https://www.npmjs.com/package/cron-translate)
+[![types](https://img.shields.io/npm/types/cron-translate.svg)](https://www.npmjs.com/package/cron-translate)
+[![license](https://img.shields.io/npm/l/cron-translate.svg)](https://www.npmjs.com/package/cron-translate)
+
 Translate plain English into cron expressions.
 
 `cron-translate` turns the schedule you would describe out loud ("every weekday at

package.json

@@ -1,7 +1,7 @@
 {
   "name": "cron-translate",
   "version": "2.0.0",
-  "description": "Translates text to cron expression",
+  "description": "Translate plain English into cron expressions. Zero-dependency, TypeScript-native, built for node-cron.",
   "type": "module",
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
@@ -36,7 +36,18 @@
   },
   "keywords": [
     "cron",
-    "translate"
+    "crontab",
+    "cron-expression",
+    "cron-parser",
+    "cron-generator",
+    "cron-translate",
+    "node-cron",
+    "schedule",
+    "scheduler",
+    "scheduling",
+    "natural-language",
+    "english-to-cron",
+    "recurring"
   ],
   "author": "Lucas Merencia <lucas@merencia.com>",
   "license": "ISC",