elm-city-craftworks/practicing-ruby-web — pull request #222 by ruanwz (2014-09-16 14:11:33+00:00)
Title: to fix bundle exec rake setup

Working using ruby 2.1.1. After bundle install, then I run bundle exec rake setup, and I have the following errors:
```
➜ practicing-ruby-web git:(master) bundle exec rake setup

rake aborted!
undefined method `color' for "♥ ":String
/home/david/.rvm/gems/ruby-2.1.1/gems/rails_setup-0.0.3/lib/rails_setup/environment.rb:17:in `heart'
/home/david/gitrepos/practicing-ruby-web/lib/tasks/setup.rake:15:in `block in
```
According to README.md in rainbow, we should use require 'rainbow/ext/string' for following code in rails_setup
```ruby
"\u2665 ".color(:red)

```