History.js definitions and tests added

Tests/history-tests.ts

@@ -0,0 +1,17 @@
+/// <reference path="../Definitions/history.d.ts" />
+
+if (!History.enabled) {
+    return false;
+}
+
+History.Adapter.bind(window, 'statechange', () => {
+    var State = History.getState();
+    History.log(State.data, State.title, State.url);
+});
+
+History.pushState({ state: 1 }, "State 1", "?state=1");
+History.pushState({ state: 2 }, "State 2", "?state=2");
+History.replaceState({ state: 3 }, "State 3", "?state=3");
+History.pushState(null, null, "?state=4");
+History.back();
+History.go(2);