Unit tests: Add lost reference to middleware

test/ApplicationInsights.AspNet.Tests/project.json

@@ -1,10 +1,15 @@
 {
     "dependencies": {
-       "xunit": "2.1.0.0-beta1-build2945",
+         "ApplicationInsights.AspNet": "0.30.0.1-beta",
+        "xunit": "2.1.0.0-beta1-build2945",
         "xunit.runner.aspnet": "2.1.0.0-beta1-build60",
         "xunit.runner.visualstudio": "2.1.0.0-beta1-build1051"
     },
     "commands": {
         "test": "xunit.runner.aspnet"
-    }
+    },
+    "frameworks": {
+        "aspnet50": { },
+        "aspnetcore50": { }
+    },
 }