Update extension.json to version 2 with "updateExtensionJsonSchema.php".
-rw-r--r-- 927 extension.json
drwxr-xr-x - i18n
drwxr-xr-x - img
drwxr-xr-x - tools
-rw-r--r-- 18503 wrmap.body.php
-rw-r--r-- 854 wrmap.css
-rw-r--r-- 11248 wrmap.js