That may sound strange, but I'm indeed a little bit proud that yesterday evening I released my very first open source library: the SmartDev.ConfigurationMapper.
This is a small helper library designed to be used with ASP.NET 5 (currently still known as vNext). You pass in an instance of the new Microsoft.Framework.ConfigurationModel.IConfiguration type, and you can map the config keys to properties of your custom classes, to have strongly typed configuration types in your application.
It works both on Asp.Net50 as well as Asp.NetCore5.0 (new CoreCLR), and is one building block of a side project I started recently, because I struggled with the configuration system a bit.
Grab it on NuGet: http://www.nuget.org/packages/SmartDev.ConfigurationMapper, or get involved on GitHub: https://github.com/gingters/SmartDev.ConfigurationMapper!