Start nodejs test suite to avoid testing non-UI stuff with a real device.

1. Place tests in ./node-tests
2. Add chai, mocha, grunt-simple-mocha dev dependencies
3. Run it all with the grunt node-tests task.

node-tests/test-xml.ts

@@ -0,0 +1,7 @@
+import {assert} from "chai";
+
+describe("test", () => {
+    it("dummy", () => {
+        assert.equal(1, 2);
+    });
+});