title: Rspec undefined method 'describe'
body: <p>I'm trying to go through the tutorial and I have a feeling it's something that has to do with the rspec. The goal is to make each test pass. Here's the website where I could be doing the tutorial but I prefer to do it on my own mac book.</p>
  
  <p><a href="http://testfirst.org/live" rel="nofollow">http://testfirst.org/live</a> </p>
  
  <p><a href="https://web.archive.org/web/20140328135623/http://testfirst.org/learn_ruby" rel="nofollow">https://web.archive.org/web/20140328135623/http://testfirst.org/learn_ruby</a></p>
  
  <p>I'm on the very first one and I everytime I run </p>
  
  <pre><code>$ruby hello_spec.rb
  </code></pre>
  
  <p>I get this error.</p>
  
  <pre><code>hello_spec.rb:118:in `&lt;main&gt;': undefined method `describe' for main:Object (NoMethodError)
  </code></pre>
  
  <p>rspec (3.1.0, 2.99.0, 2.14.1)</p>
  
  <p>ruby 2.0.0p481 (2014-05-08 revision 45883) [x86_64-darwin14.0.0]</p>
  
  <pre><code>require_relative "hello"
  describe "the hello function" do
    it "says hello" do
      hello.should == "Hello!"
    end
  end
  
  describe "the greet function" do
    it "says hello to someone" do
      greet("Alice").should == "Hello, Alice!"
    end
  
    it "says hello to someone else" do
      greet("Bob").should == "Hello, Bob!"
    end
  end
  </code></pre>
  
  <p>please help!</p>