Integrate realtime alerts from MBTA #99
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So, this is by no means a PR that we should merge at this stage, but rather a first attempt at integrating with MBTA realtime alerts (#13). This information is only useful once we have the full GTFS import in our MongoDB, otherwise it doesn't make much sense.
Mostly, the two things that I have done here are setting up npm packages integration (so that we can use any package from the node ecosystem), and using a protobuf reader/decoder to interpret the alerts file from the MBTA.
@radhikamalik, @geoffreylitt: Thoughts? I'm going to put this "exploration branch" on hold until we know more about how we are going to store and access the GTFS data.