Added crumb/cookie usage to handle data access issues #93.
The crumb itself is obtained by accessing quote for Nasdaq and parsing out of the content. Not a great approach but I couldn't come up with a quicker/reliable solution.
The crumb will be obtained again if data request fails with "Unauthorized" error code. If data retrieval failed then coordinator will attempt another retrieval in 20 seconds which will include crumb retrieval. In worse case scenario, this can keep on going and so there should be some throttling. But I haven't personally ran into it and this approach seems fine for now.