Implemented build-and-test task

BuildServer/lib/tasks/dotnetbuildandtest.js

@@ -0,0 +1,22 @@
+"use strict";
+
+var sequential = require("./sequential");
+var settings = require("../../settings");
+
+module.exports = function (params, processor) {
+	return sequential({
+		tasks: [
+			{
+				type: "dotnetbuild",
+				name: "build",
+				params: {
+					solution: params.solution
+				}
+			},
+			{
+				type: "dotnetnunitall",
+				name: "test"
+			}
+		]
+	}, processor);
+};