Use this command to install OmicsON:

install.packages("devtools") devtools::install_github("wjurkowski/ONION")

I case of some problem, install packages from DESCRIPTION file. Full list of packages to install: RCurl, RJSONIO, XML, pls, yacca, FRCC, httr, STRINGdb, BiocCheck, CCA, gridExtra, mygene, utils, stats igraph, plyr, knitr, rmarkdown, testthat