Simplify to configure default MVC settings for HypermediaApi

[andresmoschini]

Maybe we could simplify services.AddMvc and app.UseMvc in something like this:

public void ConfigureServices(IServiceCollection services)
{
    services.AddHypermediaApi()
    //...
}

public void Configure(IApplicationBuilder app, IApplicationEnvironment appEnv)
{
    app.AddHypermediaApi();
    //...
}