To install the package you can use remotes:
remotes::install_github("fkeck/phylosignal")
A quick overview of the package link
Plotting phylogenies and traits values link
Keck F., Rimet F., Bouchez A. & Franc A. (2016) phylosignal: an R package to measure, test, and explore the phylogenetic signal. Ecology and Evolution 6 (9), 2774–2780. http://onlinelibrary.wiley.com/doi/10.1002/ece3.2051/epdf