Add bin and edit workflow

bin/gems/yell-2.2.2/lib/yell/configuration.rb

@@ -0,0 +1,23 @@
+require 'erb'
+require 'yaml'
+
+module Yell #:nodoc:
+
+  # The Configuration can be used to setup Yell before
+  # initializing an instance.
+  class Configuration
+
+    def self.load!( file )
+      yaml = YAML.load( ERB.new(File.read(file)).result )
+
+      # in case we have ActiveSupport
+      if defined?(ActiveSupport::HashWithIndifferentAccess)
+        yaml = ActiveSupport::HashWithIndifferentAccess.new(yaml)
+      end
+
+      yaml[Yell.env] || {}
+    end
+
+  end
+end
+