Don't use Rake v11

It doesn't work with Ruby 1.8.7 and 1.9.2.

Author: bquorning

example_app_generator/generate_app.rb

@@ -32,6 +32,8 @@
     |# Rack::Cache 1.3.0 requires Ruby >= 2.0.0
     |gem 'rack-cache', '< 1.3.0' if RUBY_VERSION < '2.0.0'
     |
+    |gem 'rake', '~> 10.0', '< 11'
+    |
     |gem 'rspec-rails',
     |    :path => '#{rspec_rails_repo_path}',
     |    :groups => [:development, :test]

rspec-rails.gemspec

@@ -42,7 +42,7 @@ Gem::Specification.new do |s|
     end
   end
 
-  s.add_development_dependency 'rake',     '~> 10.0'
+  s.add_development_dependency 'rake',     '~> 10.0', '< 11'
   s.add_development_dependency 'cucumber', '~> 1.3.5'
   s.add_development_dependency 'aruba',    '~> 0.5.4'
   s.add_development_dependency 'ammeter',  '1.1.2'