Presto, one of VoxHunt’s dependencies is not on CRAN and has to be installed from GitHub:

# install.packages('devtools')
devtools::install_github('immunogenomics/presto')

Once Presto is installed, you can install VoxHunt with

devtools::install_github('quadbiolab/voxhunt')

In addition to the R package itself, you’ll also need to download the the ABA expression data from here.