GuildVaultSync Addon
Install this into your WoW AddOns folder. Open the guild bank and the addon scans automatically; reload or log out so SavedVariables are written.
Download Addon Version 0.8.13-retailDownloads
Install the addon and companion.
Use the addon in World of Warcraft to capture guild vault data, then use the Windows companion to upload it to your GuildVaultSync account.
GuildVaultSync Uploader
Install this on Windows, paste your companion token from the Account page, and upload your SavedVariables to the hosted dashboard.
Download Companion Version 1.0.5