Issue #668: Sample should be covered by a basic functional test.
Updated build.cmd
Updating ViewStartUtility to use IFileSystem.TryGetParentPath
Fix the sample to await when writing directly to the output stream in a controller.
[Fixes #731] Add unit tests for ReflectedActionDescriptorProvider

1. Added tests that cover parameters in actions.
2. Added tests that cover building the reflected application model.
3. Added tests that cover attribute routed action constraints and default values.
4. Added tests that cover conventionally routed action constraints and default values.
5. Refactored and cleaned up ReflectedActionDescriptorProvider. All the refactors consist
   of extracting blocks of code to separate methods to better display the flow when building
   the action descriptors.
Upgrade Newtonsoft.Json to 6.0.4 version
[Fixes #900] Use [Route(...)] on action methods to specify an attribute route that allows all verbs.

1. Changed attribute usage on RouteAttribute.
2. Added a test on action discovery to ensure that actions with [Route] get discovered as
   attribute routed actions.
3. Added a test on reflected action descriptor provider to ensure that an action with [Route] on
   the controller and [Route] on the action results in an action that allows any Http method.
Handle IBuilder rename to IApplicationBuilder.
Reacting to System.Text.Encoding package version change
Allow MvcRazorHost to run on vanilla .NET45
- Added net45 target and removed specific aspnet50 and aspnetcore50 APIs
from that code path.
React to renaming TargetFramework to RuntimeFramework
moving global filters to options
CR feedback