WIP microprints source now showing

also added go to install showboat and rodney for the next steps.

microprints work in qwan tracker, but not in firehose. some of the
rendering is in the project, maybe the library should provide sample
webpages.

app/lib/firehose/application.ex

@@ -12,6 +12,7 @@ defmodule Firehose.Application do
       Firehose.Repo,
       {DNSCluster, query: Application.get_env(:firehose, :dns_cluster_query) || :ignore},
       {Phoenix.PubSub, name: Firehose.PubSub},
+      {Microprints.MicroprintCache, pubsub: Firehose.PubSub},
       # Start a worker by calling: Firehose.Worker.start_link(arg)
       # {Firehose.Worker, arg},
       # Start to serve requests, typically the last entry