chore(doc-gen): generate router typings file

Closes #2659

docs/dgeni-package/templates/angular2/angular2.d.ts.template.html

@@ -0,0 +1,25 @@
+{% extends '../type-definition.template.html' %}
+{% block staticDeclarations %}
+// Angular depends transitively on these libraries.
+// If you don't have them installed you can run
+// $ tsd query es6-promise rx rx-lite --action install --save
+///<reference path="../es6-promise/es6-promise.d.ts"/>
+///<reference path="../rx/rx.d.ts"/>
+
+interface List<T> extends Array<T> {}
+interface Map<K,V> {}
+interface StringMap<K,V> extends Map<K,V> {}
+interface Type {}
+
+declare module "angular2/angular2" {
+  type SetterFn = typeof Function;
+  type int = number;
+
+  // See https://github.com/Microsoft/TypeScript/issues/1168
+  class BaseException /* extends Error */ {
+    message: string;
+    stack: string;
+    toString(): string;
+  }
+}
+{% endblock %}