Installing mvvmcross with nugget:
Search for mvvmcross in the "Manage Nugget Packages" window.
Installing mvvmcross with Package Manger Console:
PM> Install-Package MvvmCross
As the nugget finishes its installation, notice that you have two new directories named "ToDo-MvvmCross" in your PCL and the application Project, follow the instructions step by step.
If you done everything right, you can compile and run your application. You should see this "Hello MvvmCross" screen: