depend on Logging.Interfaces instead, fixes #50

Author: tugberkugurlu

src/Microsoft.AspNet.StaticFiles/project.json

@@ -6,7 +6,7 @@
         "Microsoft.AspNet.Http.Interfaces": "1.0.0-*",
         "Microsoft.AspNet.FileProviders.Interfaces": "1.0.0-*",
         "Microsoft.AspNet.Hosting.Interfaces": "1.0.0-*",
-        "Microsoft.Framework.Logging": "1.0.0-*",
+        "Microsoft.Framework.Logging.Interfaces": "1.0.0-*",
         "Microsoft.Framework.NotNullAttribute.Internal": { "type": "build", "version": "1.0.0-*" },
         "Microsoft.Framework.WebEncoders": "1.0.0-*"
     },