Add formatter and initial tests.

Tests/Importer/ZaaImporter/ZaaImporterTest.cs

@@ -37,11 +37,7 @@ namespace Tests.Importer.ZaaImporter
         [Test]
         public void ParseTimePoints()
         {
-            Stream s = this.GetType().Assembly.GetManifestResourceStream("Tests.demo-output.txt");
-            StreamReader r = new StreamReader(s);
-            zaa.ZaaImporter importer = new zaa.ZaaImporter();
-            importer.Import(r.ReadToEnd());
-
+            zaa.ZaaImporter importer = TestHelpers.ZaaImporterFromResource();
             // Only 6 distinct time points (see method documentation above).
             Assert.AreEqual(6, importer.Laboratory.TimePoints.Count);
         }