Move RuleSet::Patern to top-level Rule class

lib/propane/rule.rb

@@ -0,0 +1,19 @@
+class Propane
+
+  class Rule
+
+    attr_reader :name
+
+    attr_reader :components
+
+    attr_reader :code
+
+    def initialize(name, components, code)
+      @name = name
+      @components = components
+      @code = code
+    end
+
+  end
+
+end