configuration.rb in departure-4.0.1 vs configuration.rb in departure-5.0.0

@@ -1,13 +1,14 @@
 require 'yaml'
+require 'erb'
 
 class Configuration
-  CONFIG_PATH = 'config.yml'
+  CONFIG_PATH = 'config.yml.erb'.freeze
 
   attr_reader :config
 
   def initialize
-    @config = YAML.load_file(CONFIG_PATH)
+    @config = YAML.load(ERB.new(File.read(CONFIG_PATH)).result).freeze
   end
 
   def [](key)
     config[key]
   end