First commit.

.env.example

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+PUSHER_KEY=
+PUSHER_SECRET=
+PUSHER_APP=

.gitignore

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+.env

Gemfile

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+source 'https://rubygems.org'
+
+gem 'dotenv'
+
+gem 'sinatra'
+gem 'pusher'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    httpclient (2.6.0.1)
+    multi_json (1.11.0)
+    pusher (0.14.4)
+      httpclient (~> 2.5)
+      multi_json (~> 1.0)
+      signature (~> 0.1.8)
+    rack (1.6.0)
+    rack-protection (1.5.3)
+      rack
+    signature (0.1.8)
+    sinatra (1.4.6)
+      rack (~> 1.4)
+      rack-protection (~> 1.4)
+      tilt (>= 1.3, < 3)
+    tilt (1.4.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  pusher
+  sinatra

scores.rb

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+#!/usr/bin/env ruby
+
+require 'dotenv'
+Dotenv.load
+
+require 'sinatra'
+require 'pusher'
+
+Pusher.url = "http://#{ENV['PUSHER_KEY']}:#{ENV['PUSHER_SECRET']}@api.pusherapp.com/apps/#{ENV['PUSHER_APP']}"
+
+put '/player1_scores' do
+  Pusher['scores'].trigger('player1_scores', {
+    message: 'Player 1 scores'
+  })
+end
+
+put '/player2_scores' do
+  Pusher['scores'].trigger('player2_scores', {
+    message: 'Player 2 scores'
+  })
+end