Update nhkworldpremium.com

sites/nhkworldpremium.com/nhkworldpremium.com.test.js

@@ -1,5 +1,3 @@
-// npm run grab -- --site=nhkworldpremium.com --lang=ja
-
 const { parser, url } = require('./nhkworldpremium.com.config.js')
 const fs = require('fs')
 const path = require('path')

sites/nhkworldpremium.com/readme.md

@@ -0,0 +1,25 @@
+# nhkworldpremium.com
+
+https://nhkworldpremium.com/en/schedules (English)
+
+https://nhkworldpremium.com/ja/schedules (Japanese)
+
+### Download the guide
+
+English:
+
+```sh
+npm run grab -- --site=nhkworldpremium.com --lang=en
+```
+
+Japanese:
+
+```sh
+npm run grab -- --site=nhkworldpremium.com --lang=ja
+```
+
+### Test
+
+```sh
+npm test -- nhkworldpremium.com
+```