add_busy_bar            Automatic busy indicator (Progress bar)
add_busy_gif            Automatic busy indicator (GIF)
add_busy_spinner        Automatic busy indicator (spinner)
logo_silex              Silex logo for Shiny use
manual-gif              Manual busy indicator (GIF)
manual-progressbar      Manual busy indicator (progress bar)
manual-spinner          Manual busy indicator (spinner)
modal-gif               Show a modal with a GIF
modal-progress          Show a modal with a progress bar
modal-spinner           Show a modal with a spinner
progress                Create progress indicator
spin_epic               Epic spinners
spin_kit                SpinKit spinners
