title: Rails: Gemspec is not valid. Please fix this gemspec
body: <p>When I install a gem from github it gives me the error:</p>
  
  <pre><code>number_internationalizer at /usr/local/rvm/gems/ruby-1.9.3-p194@number_internationalizer/bundler/gems/number_internationalizer-c0d642b04e87 did not have a valid gemspec.
  This prevents bundler from installing bins or native extensions, but that may not affect its functionality.
  The validation message from Rubygems was:
    "FIXME" or "TODO" is not a description
  </code></pre>
  
  <p>The gemspec is:</p>
  
  <pre><code># -*- encoding: utf-8 -*-
  lib = File.expand_path('../lib', __FILE__)
  $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
  require 'number_internationalizer/version'
  
  Gem::Specification.new do |gem|
    gem.name          = "number_internationalizer"
    gem.version       = NumberInternationalizer::VERSION
    gem.authors       = ["Myself"]
    gem.email         = ["myemail@email.com"]
    gem.description   = %q{Internationalize numbers adding normalization, validation and modifying the number field to restor the value to its original if validation fails}
    gem.summary       = gem.description
    gem.homepage      = ""
  
    gem.files         = `git ls-files`.split($/)
    gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
    gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
    gem.require_paths = ["lib"]
  end
  </code></pre>
  
  <p>How can I fix that error?</p>