Implemented nuget push task

BuildServer/lib/tasks/dotnetnugetpush.js

@@ -0,0 +1,33 @@
+"use strict";
+
+var sequential = require("./sequential");
+var settings = require("../../settings");
+
+module.exports = function (params, processor) {
+	var date = new Date(),
+		version = (params.major || "0") + "." + date.getFullYear() + "." + ((date.getMonth() + 1) * 100 + date.getDay()) + "." + ((date.getHours() * 100 + date.getMinutes()) * 100 + date.getSeconds());
+
+	return sequential({
+		tasks: [
+			{
+				type: "dotnetbuilderwrapper",
+				params: {
+					command: "nugetpack",
+					BaseDirectory: processor.context.exported,
+					SpecPath: processor.context.exported + "/" + params.nuspec,
+					OutputDirectory: processor.context.release,
+					Version: version
+				}
+			},
+			{
+				type: "dotnetbuilderwrapper",
+				params: {
+					command: "nugetpush",
+					Package: processor.context.release + "/" + params.name + "." + version + ".nupkg",
+					NugetHost: settings.nugetHost,
+					ApiKey: settings.nugetApiKey
+				}
+			}
+		]
+	}, processor);
+};