Hi @agonzalez91,
Welcome to this forum 
Actually, you must have tried to install the shinysky package with install.packages("shinysky"). However, the package has not been released to CRAN and its author also mentioned that he/she stopped active development on it. So, it will probably never make it never. Nevertheless, you can still access it by installing it in the following way:
install.packages("remotes")
install_github("AnalytixWare/ShinySky")
library(shinysky)
The package includes a cool way to see all its features: run.shinysky.example().
Hope this helps.