Users tools

Created models/tables for user, tool, and user_tool w/ associations

Also added gems: (feel free to remove the ones you don't want in master)

gem "bcrypt-ruby"
gem "resque"
gem "figaro"
gem 'flog'
gem 'rubocop'
gem 'brakeman'
gem 'omniauth-twitter'

group :development do
  gem "better_errors" 
  gem "binding_of_caller"
end

group :development, :test do
  gem "rspec-rails"
  gem "guard-rspec"
  gem "terminal-notifier-guard"
  gem "factory_girl_rails"
  gem 'simplecov', :require => false
end