Installing Julia Packafge from codebase

Hi,
I have installed JuliaPro on my windows machine.
I am interested in going through codebase of GitHub - JuliaStats/MultivariateStats.jl: A Julia package for multivariate statistics and data analysis (e.g. dimension reduction)
and eventually contribute to it. So, i have clone d the repo to my machine.
I have opened the repo directory in Julia Pro.

Now i am trying to install the MultivariateStats.jl from the code base by doing

using Pkg
Pkg.add(".")

But the MultivariateStats is not installed from the output of Pkg.installed()

Am i doing anything wrong ?