Here are new features:
1. Support equations with LaTeX syntax
2. Share book between devices via browser by using QR code
3. Import files from Google Drive
4. Transfer book to desktop via iTunes File Sharing (USB without WiFi)
4. Transfer book to desktop via iTunes File Sharing (USB without WiFi)
5. Option to split into chapters by title when importing document from Google Drive
6. Fix bug for importing book
7. Fix bug for generating book without glossary
