#78 The ViewLoader now doesn't overwrite an existing viewModel when an existing instance of the codeBehind is set to the ViewLoader.
#78 Created a method in the DependencyInjector to get the viewModel of a given View. This way we can now set the ViewModel in the loaded ViewTuple
#78 Simplified the retrieval of the viewModel of a given View instance in the DependencyInjector
Merge pull request #96 from sialcasa/#78_access_viewModel

#78 access view model