pod setupしたらエラーが起きたので、0.19.2を使うように変更

http://stackoverflow.com/questions/26273378/cant-install-cocoapods-report-on-pod-setup

$ pod setup

/Users/hoge/.rvm/gems/ruby-1.9.2-p320/gems/xcodeproj-0.19.3/lib/xcodeproj/plist_helper.rb:140:in `<module:CoreFoundation>': uninitialized constant Fiddle::NULL (NameError)
	from /Users/hoge/.rvm/gems/ruby-1.9.2-p320/gems/xcodeproj-0.19.3/lib/xcodeproj/plist_helper.rb:70:in `<top (required)>'
	from /Users/hoge/.rvm/rubies/ruby-1.9.2-p320/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:55:in `require'

$ sudo gem uninstall xcodeproj
You have requested to uninstall the gem:
	xcodeproj-0.19.3
cocoapods-0.34.2 depends on xcodeproj (~> 0.19.2)
If you remove this gem, these dependencies will not be met.
Removing xcodeproj
Successfully uninstalled xcodeproj-0.19.3

$ sudo gem install xcodeproj -v 0.19.2
Successfully installed xcodeproj-0.19.2
Installing ri documentation for xcodeproj-0.19.2
Done installing documentation for xcodeproj after 2 seconds
1 gem installed

このあともう一度

$ pod setup

Checking out files: 100% (6742/6742), done.
Setup completed