React to Kestrel rename

aspnet/KestrelHttpServer#11

Author: halter73

samples/StaticFileSample/project.json

@@ -3,7 +3,7 @@
         "web": "Microsoft.AspNet.Hosting --server Microsoft.AspNet.Server.WebListener --server.Urls http://localhost:12345/"
     },
     "dependencies": {
-        "Kestrel": "1.0.0-*",
+        "Microsoft.AspNet.Server.Kestrel": "1.0.0-*",
         "Microsoft.AspNet.Server.IIS": "1.0.0-*",
         "Microsoft.AspNet.Server.WebListener": "1.0.0-*",
         "Microsoft.AspNet.StaticFiles": "1.0.0-*",