The package isn't yet on CRAN (https://cran.r-project.org) or Bioconductor (https://bioconductor.org) but it uses packages from Bioconductor. To install it, use:
source("https://bioconductor.org/biocLite.R")
biocLite("/agapow/subtypr")
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.