title: UseSqlServer method missing MVC 6
body: <p>I am trying to implement Entity Framework 7 in MVC 6, and on this page <a href="https://github.com/aspnet/MusicStore/blob/master/src/MusicStore/Startup.cs#l44-49" rel="nofollow noreferrer">here</a> it says to do</p>
  <pre><code>services.AddEntityFramework()
      .AddSqlServer()
      .AddDbContext&lt;MusicStoreContext&gt;(options =&gt;
                          options.UseSqlServer(Configuration[&quot;Data:DefaultConnection:ConnectionString&quot;]));
  </code></pre>
  <p>But for me, the <code>UseSqlServer</code> method isn't visible?  Anyone know how to make it visible?  Or is this an old way of configuring entity framework?</p>
  <p>My <code>startup.cs</code> file looks like this</p>
  <pre><code>using FluentValidation;
  using Microsoft.AspNet.Builder;
  using Microsoft.AspNet.Hosting;
  using Microsoft.Framework.ConfigurationModel;
  using Microsoft.Framework.DependencyInjection;
  
  namespace me.namespace.project
  {
      public class Startup
      {
          public static IConfiguration Configuration { get; set; }
  
          public Startup(IHostingEnvironment env)
          {
              // Setup configuration sources.
              Configuration = new Configuration()
                  .AddJsonFile(&quot;config.json&quot;)
                  .AddEnvironmentVariables();
          }
  
          public void ConfigureServices(IServiceCollection services)
          {
              services.AddMvc();
  
              // entity framework
              services.AddEntityFramework()
                  .AddSqlServer()
                  .AddDbContext&lt;DataContext&gt;();
  
          }
      }
  }
  </code></pre>