Added link to data release 1.

Author: dperelman

README.md

@@ -1,8 +1,8 @@
 # codehunt-data-cs
 Code Hunt Data Helper, C# version (see also: [Python version][py])
 
-This is intended to help with analyzing data from the Code Hunt Data
-Release 1 by parsing the filenames and providing code for querying the
+This is intended to help with analyzing data from the [Code Hunt Data
+Release 1][dr1] by parsing the filenames and providing code for querying the
 [Code Hunt REST API](https://api.codehunt.com/) as well as showing an
 example of using [Roslyn][roslyn] to parse the user code.
 
@@ -11,3 +11,4 @@ See `codehunt-data-example/Program.cs` for a simple example of using this code.
 
 [py]: https://github.com/dperelman/codehunt-data-py
 [roslyn]: https://github.com/dotnet/roslyn
+[dr1]: https://github.com/Microsoft/Code-Hunt/tree/master/Code%20Hunt%20dataset%201