Add install script for testing gems locally

Author: David Heinemeier Hansson

install.rb

@@ -0,0 +1,11 @@
+version = ARGV.pop
+
+%w( activesupport activemodel activerecord activeresource actionpack actionmailer railties ).each do |framework|
+  puts "Installing #{framework}..."
+  `cd #{framework} && gem build #{framework}.gemspec && gem install #{framework}-#{version}.gem --no-ri --no-rdoc && rm #{framework}-#{version}.gem`
+end
+
+puts "Installing Rails..."
+`gem build rails.gemspec`
+`gem install rails-#{version}.gem --no-ri --no-rdoc `
+`rm rails-#{version}.gem`