Link to getting started docs

[BethMassi]

When you search for ".net core" on Google, this is repo the first hit. It would be good to add a link in the readme to help people get started.

• What is .NET Core?: http://dotnet.github.io/core/
• Get Started with .NET Core: http://dotnet.github.io/core/getting-started/

@richlander @blackdwarf what do you think?

[blackdwarf]

+1 to that, sounds like a great idea.

[ghost]

And now ironically I think it's this page that's causing a search "dnvm hello world" to link to a page that doesn't exist any more. (https://dotnet.github.io/core/getting-started/ instead of https://dotnet.github.io/getting-started/)