Chapter 6 Extension
Popular packages in developing Shiny apps:
shinydashboard: to create dashboard like UI
shinythemes: makes it easy to alter the overall appearance of your Shiny applications
shinyBS: adds several additional Twitter Boostrap components to shiny.
shinyFiles:extends the functionality of shiny by providing an API for client side access to the server file system.
shinysky: various UI widgets/components not part of Shiny e.g. alerts, styled buttons
plotly: create interactive web-based graphs
DT: provides filtering, pagination, sorting, and many other features in the tables