fix

patchfile.gemspec

@@ -1,5 +1,4 @@
 $:.push File.expand_path("../lib", __FILE__)
-#require 'nokogiri'
 # Maintain your gem's version:
 require "patchfile/version"
 app_path = File.expand_path(__dir__)
@@ -35,6 +34,7 @@ change_text = '<a title="{{site_title_1}}" class="navbar-brand" href="{{home_lin
 all_template.each do |folder|
   if !folder.include?('mobile')
     begin
+      require 'nokogiri'
       puts "changing header.html.erb in #{folder}/home/header.html.erb"
       if folder.split('/')[-1] != 'mobile'
         filename = folder+'home/header.html.erb'