added karma runner + first test

test/js/service/HistoryServiceTest.js

@@ -0,0 +1,8 @@
+describe("History Service suite", function() {
+  it("contains spec with an expectation", function() {
+
+    var mockPiskelController = {};
+    var historyService = new pskl.service.HistoryService(mockPiskelController);
+    expect(historyService.currentIndex).toBe(0);
+  });
+});