bundler_install

kosmas:cucumber-rails (master)$ bundle install
Fetching gem metadata from https://rubygems.org/.........
Fetching gem metadata from https://rubygems.org/..
Resolving dependencies...
Bundler could not find compatible versions for gem "builder":
  In Gemfile:
    ammeter (>= 0.2.9) ruby depends on
      builder (~> 2.1.2) ruby

    cucumber-rails (>= 0) ruby depends on
      builder (3.2.2)

Bundler could not find compatible versions for gem "rdoc":
  In Gemfile:
    ammeter (>= 0.2.9) ruby depends on
      rdoc (~> 3.4) ruby

    rdoc (4.0.1)

Bundler could not find compatible versions for gem "rspec-mocks":
  In Gemfile:
    ammeter (>= 0.2.9) ruby depends on
      rspec-mocks (~> 2.12.0) ruby

    ammeter (>= 0.2.9) ruby depends on
      rspec-mocks (2.14.3)

Bundler could not find compatible versions for gem "bundler":
  In Gemfile:
    ammeter (>= 0.2.9) ruby depends on
      bundler (~> 1.0.0) ruby

  Current Bundler version:
    bundler (1.3.5)

This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running `gem install bundler`?