thanks for the good suggestion

http://play.golang.org/p/MZptHZeYUx

Update config.go

fix #217

Fix typos in the readme file.

已经支持了任意定义变量的路由形式，具体的使用请参考：

func TestManyRoute(t *testing.T) {

	r, _ := http.NewRequest("GET", "/beego32-12.html", nil)
	w := httptest.NewRecorder()

	handler := NewControllerRegistor()
	handler.Add("/beego:id([0-9]+)-:page([0-9]+).html", &TestController{})
	handler.ServeHTTP(w, r)

	id := r.URL.Query().Get(":id")
	page := r.URL.Query().Get(":page")

	if id != "32" {
		t.Errorf("url param set to [%s]; want [%s]", id, "32")
	}
	if page != "12" {
		t.Errorf("url param set to [%s]; want [%s]", page, "12")
	}
}