fixes the build

testOauthClient/project.json

@@ -7,7 +7,9 @@
         "defaultNamespace": "testOauthClient"
     },
     "dependencies": {
-    "YavscLib": {},
+        "Yavsc.Abstract": {
+            "type": "build"
+        },
         "Microsoft.AspNet.Authentication.Cookies": "1.0.0-rc1-final",
         "Microsoft.AspNet.Authentication.OAuth": "1.0.0-rc1-final",
         "Microsoft.AspNet.Diagnostics": "1.0.0-rc1-final",
@@ -28,7 +30,11 @@
         "web": "Microsoft.AspNet.Server.Kestrel --server.urls=http://*:5002"
     },
     "frameworks": {
-    "dnx451": {}
+        "dnx451": {
+            "dependencies": {
+                "System.Json": "4.0.0"
+            }
+        }
     },
     "exclude": [
         "wwwroot",