[TouchRunner] Print test output to the console. (#75)

Updated versions of NUnit will capture Console.Out during a test run. We want
to show it in the Console, so write it there when the test has finished.

I couldn't find a way to tell NUnit to not capture Console.Out in the first place.

NUnitLite/TouchRunner/TouchRunner.cs

@@ -494,6 +494,10 @@ public virtual void TestFinished (ITestResult r)
 					Writer.Write (" : {0}", message.Replace ("\r\n", "\\r\\n"));
 				}
 				Writer.WriteLine ();
+#if NUNITLITE_NUGET
+				if (!string.IsNullOrEmpty (result.Output))
+					Writer.WriteLine (result.Output);
+#endif
 
 				string stacktrace = result.StackTrace;
 				if (!String.IsNullOrEmpty (result.StackTrace)) {