Not able to add Newsoft Json package in the Xamarin Studio

Hi,

I am working on Json file.I need to convert the json file in my code like below

var example=JsonConvert.DeserializeObject<List>(json);

to convert I need to add the package called newtonsoft json when I try to add newtonsoft json I am not able to find and add the right package.I tried to find the solution how to add it manually it didn't work.I downloaded the least version of the package .

it is in the format called "nupkg" how can I add it to my Tamarin Studio.I am working on Tamarin cross platform.

does any one tried to add the packages apart from nuGet package UI

1.How many ways we can add packages to our projects in Xamarin.In net I have seen for Visual studio.But I am using Xamarin Studio