title: I couldn't install the bundle in ruby
body: <p>I have a problem when trying to install the bundle in ruby. i try to update it after creating the Gemfile </p>
  
  <p>I have used this command : </p>
  
  <blockquote>
    <p>bundle gem GEM_NAME</p>
  </blockquote>
  
  <pre><code>emna@tarek-Vostro-3902:~/Gemfile$ ls -l
  total 32
  drwxrwxr-x 2 emna emna 4096 Dec 28 13:11 bin
  -rw-rw-r-- 1 emna emna 3238 Dec 28 13:11 CODE_OF_CONDUCT.md
  -rw-rw-r-- 1 emna emna   92 Dec 28 13:11 Gemfile
  -rw-rw-r-- 1 emna emna 1428 Dec 28 13:11 Gemfile.gemspec
  drwxrwxr-x 3 emna emna 4096 Dec 28 13:11 lib
  -rw-rw-r-- 1 emna emna  117 Dec 28 13:11 Rakefile
  -rw-rw-r-- 1 emna emna 1400 Dec 28 13:11 README.md
  drwxrwxr-x 2 emna emna 4096 Dec 28 13:11 spec
  emna@tarek-Vostro-3902:~/Gemfile$ bundle update
  The gemspec at /home/emna/Gemfile/Gemfile.gemspec is not valid. Please fix this gemspec.
  The validation error was '"FIXME" or "TODO" is not an author'
  emna@tarek-Vostro-3902:~/Gemfile$ echo 'gem "rspec"' &gt;&gt; Gemfile
  emna@tarek-Vostro-3902:~/Gemfile$ bundle install
  You have one or more invalid gemspecs that need to be fixed.
  The gemspec at /home/emna/Gemfile/Gemfile.gemspec is not valid. Please fix this gemspec.
  The validation error was '"FIXME" or "TODO" is not an author'
  emna@tarek-Vostro-3902:~/Gemfile$ bundle exec rspec
  bundler: command not found: rspec
  Install missing gem executables with `bundle install`
  emna@tarek-Vostro-3902:~/Gemfile$ ls
  bin  CODE_OF_CONDUCT.md  Gemfile  Gemfile.gemspec  lib  Rakefile  README.md  spec
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/W2Q9J.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/W2Q9J.png" alt="enter image description here"></a>
  This is an update for the same question, i added the file </p>
  
  <blockquote>
    <p>Gemfile.gemspec</p>
  </blockquote>
  
  <pre><code>    # coding: utf-8
  lib = File.expand_path('../lib', __FILE__)
  $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
  require 'Gemfile/version'
  
  Gem::Specification.new do |spec|
    spec.name          = "Gemfile"
    spec.version       = Gemfile::VERSION
    spec.authors       = ["TODO: Write your name"]
    spec.email         = ["TODO: Write your email address"]
  
    spec.summary       = %q{TODO: Write a short summary, because Rubygems requires one.}
    spec.description   = %q{TODO: Write a longer description or delete this line.}
    spec.homepage      = "TODO: Put your gem's website or public repo URL here."
  
    # Prevent pushing this gem to RubyGems.org. To allow pushes either set the 'allowed_push_host'
    # to allow pushing to a single host or delete this section to allow pushing to any host.
    if spec.respond_to?(:metadata)
      spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
    else
      raise "RubyGems 2.0 or newer is required to protect against " \
        "public gem pushes."
    end
  
    spec.files         = `git ls-files -z`.split("\x0").reject do |f|
      f.match(%r{^(test|spec|features)/})
    end
    spec.bindir        = "exe"
    spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
    spec.require_paths = ["lib"]
  
    spec.add_development_dependency "bundler", "~&gt; 1.13"
    spec.add_development_dependency "rake", "~&gt; 10.0"
    spec.add_development_dependency "rspec", "~&gt; 3.0"
  end
  ~                                                                                                                                                                                 
  ~  
  </code></pre>