Installing Julia Packafge from codebase

I have installed JuliaPro on my windows machine.
I am interested in going through codebase of
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

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

Am i doing anything wrong ?