You can install shiny just like any other software packages in R. Follow the command below. I have not yet tried to install SHINY in my Ubuntu. I would think it should be very similar.
Installing package into ‘C:/Users/Ankan.Basu/Documents/R/win-library/3.0’
(as ‘lib’ is unspecified)
trying URL ‘http://cran.rstudio.com/bin/windows/contrib/3.0/shiny_0.10.1.zip’
Content type ‘application/zip’ length 1435326 bytes (1.4 Mb)
downloaded 1.4 Mb
package ‘shiny’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in