Initial project structure with some barebones layout, CSS and JS from game-data

Rakefile

@@ -0,0 +1,23 @@
+require 'bundler/setup'
+
+namespace :server do
+  task :start do
+    ENV['RACK_ENV'] = 'production'
+    system("puma")
+  end
+
+  task :dev do
+    system('rerun --no-notify --dir="src/" puma')
+  end
+end
+
+namespace :test do
+  task :unit do
+    ENV['RACK_ENV'] = 'testing'
+    system("rspec")
+  end
+
+  task :lint do
+    system("rubocop src/ spec/")
+  end
+end