gem install bundler

http://stackoverflow.com/questions/7483515/rake-aborted-no-such-file-to-load-bundler-setup-rails-3-1

$ rake install
rake aborted!
LoadError: cannot load such file -- bundler/setup
/home/jvava/mine/git/vagrant/Rakefile:2:in `<top (required)>‘
(See full trace by running task with --trace)

gem install bundler

原文：http://www.cnblogs.com/jvava/p/5812357.html