first version
NOTE: This NuGetPackage will create 3 other folders: UWP, iOS and Droid. These three folders you have to move to the each Platform's project like this: UWP -> <your_project_name>.UWP Droid -> <your_project_name>.Droid iOS -> <your_project_name>.iOS
Usage:
Create and Write file:
DependencyService.Get<IFileStoreAndLoad.IFileStoreAndLoad>().SaveText("filename.txt","text");
Load text from file:
string loadedText = DependencyService.Get<IFileStoreAndLoad.IFileStoreAndLoad>().LoadText("filename.txt");