Overhauled configuration so that it's a bit more useful in more spots; configuration now properly loads an environment config as well as defaults; updated some woodpecker config

src/config.rb

@@ -6,11 +6,13 @@ require 'yaml'
 class Config
 
   DEFAULT_CONFIG = 'config/defaults.yaml'
+  ENVIRONMENT_CONFIG = ENV.fetch('RACK_ENV', 'development')
 
-  def initialize(config_path)
+  def initialize(config_path = "config/#{ENVIRONMENT_CONFIG}.yaml")
     @data = YAML.load_file(DEFAULT_CONFIG)
 
     # merge in user-defined configuration if it exists
+    puts "Merging #{config_path} with #{DEFAULT_CONFIG}."
     @data.merge!(YAML.load_file(config_path)) if File.exist?(config_path)
   end