Extract error message to strings, progressBar is hidden by default

Move loading state change to BaseViewModel, set it whenever UseCase is invoked

Add/remove some comments

Create BaseRepository class with fetchData method

AppFragmentNavigator accepts FragmentActivity as argument when injected

Refactor repsitory generic getData method

Create BaseViewModel, change default Dispatcher to main

Change ViewState from generic class to sealed class

Add launch extension on ViewModel class

Merge branch 'master' of https://github.com/cobeisfresh/CleanArchitecture-Android-Showcase

Add try catch block to catch possible timeout exceptions in repository

Update README.md

Update README.md

Update WeatherRepository tests

Merge branch 'feature/tests'