Could not add Kidozen package in Xamarin Studio on Windows platform

Hi ,

I am trying to add KidoZen package in my project.But It is showing following error.

Adding KidoZen...
Attempting to resolve dependency 'modernhttpclient (≥ 2.1.5)'.
Attempting to resolve dependency 'Newtonsoft.Json (≥ 6.0.8)'.
Attempting to resolve dependency 'FSharp.Core (≥ 3.1.2.1)'.
Attempting to resolve dependency 'WebSocket4Net (≥ 0.11)'.
Attempting to resolve dependency 'Couchbase.Lite (≥ 1.0.4.1)'.
Attempting to resolve dependency 'SQLitePCL.raw_basic (≥ 0.7.1)'.
Attempting to resolve dependency 'SQLitePCL.ugly (≥ 0.7.1)'.
Adding 'modernhttpclient 2.1.5' to kidozenAppDemo.Droid.
For adding package 'modernhttpclient 2.1.5' to project 'kidozenAppDemo.Droid' that targets 'MonoAndroid50',

Assembly references are being added from 'lib\MonoAndroid'

Added reference 'ModernHttpClient' to project 'kidozenAppDemo.Droid'.
Added reference 'OkHttp' to project 'kidozenAppDemo.Droid'.
Added file 'packages.config'.
Added file 'packages.config' to project 'kidozenAppDemo.Droid'.
Successfully added 'modernhttpclient 2.1.5' to kidozenAppDemo.Droid.
Adding 'Newtonsoft.Json 6.0.8' to kidozenAppDemo.Droid.
Could not install package 'Newtonsoft.Json 6.0.8'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v5.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

For fixing this what are the step that I need to take can any one tell me how to fix this.