```ruby
$:.push File.expand_path('../lib', __FILE__)

# Maintain your gem's version:
require 'rails_event_store/browser/version'

# Describe your gem and declare its dependencies:
Gem::Specification.new do |s|
  s.name        = 'rails_event_store-browser'
  s.version     = RailsEventStore::Browser::VERSION
  s.authors     = ['Arkency']
  s.email       = ['dev@arkency.com']
  s.summary     = 'Web interface for RailsEventStore'
  s.license     = 'MIT'

  s.files = Dir['{app,config,db,lib}/**/*', 'MIT-LICENSE', 'Rakefile', 'README.md']

  s.add_dependency 'rails', '>= 4.2'
  s.add_dependency 'rails_event_store', '= 0.22.0'

  s.add_development_dependency 'sqlite3'
  s.add_development_dependency 'rspec-rails', '~> 3.6'
  s.add_development_dependency 'mutant-rspec', '~> 0.8.14'
  s.add_development_dependency 'capybara'
  s.add_development_dependency 'selenium-webdriver'
end
```

Add missing directory to released gem.
user
```ruby
$:.push File.expand_path('../lib', __FILE__)

# Maintain your gem's version:
require 'rails_event_store/browser/version'

# Describe your gem and declare its dependencies:
Gem::Specification.new do |s|
  s.name        = 'rails_event_store-browser'
  s.version     = RailsEventStore::Browser::VERSION
  s.authors     = ['Arkency']
  s.email       = ['dev@arkency.com']
  s.summary     = 'Web interface for RailsEventStore'
  s.license     = 'MIT'

  s.files = Dir['{app,config,db,lib,public}/**/*', 'MIT-LICENSE', 'Rakefile', 'README.md']

  s.add_dependency 'rails', '>= 4.2'
  s.add_dependency 'rails_event_store', '= 0.22.0'

  s.add_development_dependency 'sqlite3'
  s.add_development_dependency 'rspec-rails', '~> 3.6'
  s.add_development_dependency 'mutant-rspec', '~> 0.8.14'
  s.add_development_dependency 'capybara'
  s.add_development_dependency 'selenium-webdriver'
end
```
assistant