Do not use --local option when installing the gems

install.rb

@@ -7,10 +7,10 @@
 
 %w( activesupport activemodel activerecord actionpack actionmailer railties ).each do |framework|
   puts "Installing #{framework}..."
-  `cd #{framework} && gem build #{framework}.gemspec && gem install #{framework}-#{version}.gem --local --no-ri --no-rdoc && rm #{framework}-#{version}.gem`
+  `cd #{framework} && gem build #{framework}.gemspec && gem install #{framework}-#{version}.gem --no-ri --no-rdoc && rm #{framework}-#{version}.gem`
 end
 
-puts "Installing Rails..."
+puts "Installing rails..."
 `gem build rails.gemspec`
-`gem install rails-#{version}.gem --local --no-ri --no-rdoc `
+`gem install rails-#{version}.gem --no-ri --no-rdoc `
 `rm rails-#{version}.gem`