Update Visual Studio 2015 QuickStart docs to reflect ASP.NET Core

[technoloG]

Regarding the Visual Studio 2015 QuickStart documentation:
https://angular.io/docs/ts/latest/cookbook/visual-studio-2015.html

The current QuickStart structure is geared toward ASP.NET 4.x projects.

With the release of ASP.NET Core all static files are hosted in wwwroot, however packages obtained via NPM are in a sibling node_modules, which cannot be accessed from files in wwwroot.

Ideally, the necessary files could be obtained via Bower, which creates a copy of files in wwwroot/lib. At the minimum, there should be additional capabilities to copy the files obtained from NPM to wwwroot/lib , or it should be clearly stated in the documentation.

To be more specific: as of Step 3 in the Visual Studio 2015 QuickStart documentation, it is suggested to open a new ASP.NET project in Visual Studio. While suggested workflow works for ASP.NET 4.x projects, things have changed in ASP.NET 5 - better known as ASP.NET Core - projects.

As of recent updates to Visual Studio 2015 and the introduction of ASP.NET Core, the project structure has changed slightly, including explicitly having wwwroot in the root of the project - where static files are intended to reside and be run or in the browser. As a result, the steps provided in the QuickStart for Visual Studio 2015 don't necessarily apply.

[Foxandxss]

We have something going on #2850