Remove dependency on DependencyInjection and instead use DependencyInjection.Interfaces on Http.Extensions

Fixes: #228

Author: Praburaj

src/Microsoft.AspNet.Http.Extensions/project.json

@@ -4,7 +4,7 @@
     "dependencies": {
         "Microsoft.AspNet.Http": "1.0.0-*",
         "Microsoft.AspNet.Http.Interfaces": "1.0.0-*",
-        "Microsoft.Framework.DependencyInjection": "1.0.0-*",
+        "Microsoft.Framework.DependencyInjection.Interfaces": "1.0.0-*",
         "Microsoft.Framework.NotNullAttribute.Internal": { "type": "build", "version": "1.0.0-*" },
         "Microsoft.Framework.WebEncoders.Core": "1.0.0-*",
         "Microsoft.Net.Http.Headers": "1.0.0-*"
@@ -14,6 +14,7 @@
         },
         "dnxcore50": {
             "dependencies": {
+                "System.IO.FileSystem": "4.0.0-beta-*",
                 "System.Reflection.TypeExtensions": "4.0.0-beta-*",
                 "System.Runtime": "4.0.20-beta-*"
             }

test/Microsoft.AspNet.Http.Extensions.Tests/project.json

@@ -4,6 +4,7 @@
     "Microsoft.AspNet.Http.Extensions": "1.0.0-*",
     "Microsoft.AspNet.Http.Interfaces": "1.0.0-*",
     "Microsoft.AspNet.Http.Core": "1.0.0-*",
+    "Microsoft.Framework.DependencyInjection": "1.0.0-*",
     "xunit.runner.aspnet": "2.0.0-aspnet-*"
   },
   "commands": {