Since Github does not support file with size larger than 100MB, source code of this package is hosted at gitlab.
The source data is downloaded from ftp://hgdownload.cse.ucsc.edu/goldenPath/currentGenomes/Gorilla_gorilla_gorilla/bigZips/gorGor5.2bit.
You may install from gitlab with
devtools::install_git('https://gitlab.com/Marlin-Na/BSgenome.GGorilla.UCSC.gorGor5.git')or from github with
devtools::install_url("https://github.com/H3K4me3/BSgenome.GGorilla.UCSC.gorGor5/releases/download/virtual-0.0.1/BSgenome.GGorilla.UCSC.gorGor5_0.0.1.tar.gz")