Update install warning to mention bundler08 gem

Rakefile

@@ -19,7 +19,8 @@ spec = Gem::Specification.new do |s|
   s.files        = Dir.glob("{bin,lib}/**/*") + %w(LICENSE README.markdown)
   s.executables  = ['bundle']
   s.require_path = 'lib'
-  s.post_install_message = "Due to a rubygems bug, you must uninstall all older versions of bundler for 0.9 to work"
+  s.post_install_message = "Due to a rubygems bug, you must uninstall older versions of the bundler gem for 0.9 to work.\n" +
+    "If you still need bundler 0.8, install the 'bundler08' gem."
 end
 
 begin

bundler.gemspec

@@ -6,13 +6,15 @@ Gem::Specification.new do |s|
 
   s.required_rubygems_version = Gem::Requirement.new(">= 1.3.5") if s.respond_to? :required_rubygems_version=
   s.authors = ["Carl Lerche", "Yehuda Katz"]
-  s.date = %q{2010-02-22}
+  s.date = %q{2010-02-23}
   s.default_executable = %q{bundle}
   s.email = ["carlhuda@engineyard.com"]
   s.executables = ["bundle"]
   s.files = ["bin/bundle", "lib/bundler/cli.rb", "lib/bundler/definition.rb", "lib/bundler/dependency.rb", "lib/bundler/dsl.rb", "lib/bundler/environment.rb", "lib/bundler/index.rb", "lib/bundler/installer.rb", "lib/bundler/remote_specification.rb", "lib/bundler/resolver.rb", "lib/bundler/rubygems_ext.rb", "lib/bundler/runtime.rb", "lib/bundler/settings.rb", "lib/bundler/setup.rb", "lib/bundler/shared_helpers.rb", "lib/bundler/source.rb", "lib/bundler/specification.rb", "lib/bundler/templates/environment.erb", "lib/bundler/templates/Gemfile", "lib/bundler/ui.rb", "lib/bundler/vendor/thor/base.rb", "lib/bundler/vendor/thor/core_ext/file_binary_read.rb", "lib/bundler/vendor/thor/core_ext/hash_with_indifferent_access.rb", "lib/bundler/vendor/thor/core_ext/ordered_hash.rb", "lib/bundler/vendor/thor/error.rb", "lib/bundler/vendor/thor/invocation.rb", "lib/bundler/vendor/thor/parser/argument.rb", "lib/bundler/vendor/thor/parser/arguments.rb", "lib/bundler/vendor/thor/parser/option.rb", "lib/bundler/vendor/thor/parser/options.rb", "lib/bundler/vendor/thor/parser.rb", "lib/bundler/vendor/thor/shell/basic.rb", "lib/bundler/vendor/thor/shell/color.rb", "lib/bundler/vendor/thor/shell.rb", "lib/bundler/vendor/thor/task.rb", "lib/bundler/vendor/thor/util.rb", "lib/bundler/vendor/thor/version.rb", "lib/bundler/vendor/thor.rb", "lib/bundler.rb", "LICENSE", "README.markdown"]
   s.homepage = %q{http://github.com/carlhuda/bundler}
-  s.post_install_message = %q{Due to a rubygems bug, you must uninstall all older versions of bundler for 0.9 to work}
+  s.post_install_message = %q{Due to a rubygems bug, you must uninstall older versions of the bundler gem for 0.9 to work.
+If you still need bundler 0.8, install the 'bundler08' gem.
+}
   s.require_paths = ["lib"]
   s.rubygems_version = %q{1.3.5}
   s.summary = %q{Bundles are fun}