Enable rubocop

Rakefile

@@ -23,6 +23,6 @@ Rake::TestTask.new(:spec) do |t|
   t.test_files = FileList['spec/**/*_spec.rb']
 end
 
-# Rake::Task[:spec].enhance ['spec:rubocop']
+Rake::Task[:spec].enhance ['spec:rubocop']
 
 task :default => :spec

lib/mm2ep_depend/parser.rb

@@ -20,11 +20,9 @@ module Mm2ep
       def initialize(str, value)
         @errors = []
         @name = str
-        @value = case value
-                 when /true/i then true
-                 when /false/i then false
-                 else value
-                 end
+        @value = value
+        @value = true if value =~ /^true$/i
+        @value = false if value =~ /^false$/i
         return unless @value.nil?
         @errors << VarNotDefined.new(
           message: "No value for #{@name}",