title: Type 'String' does not conform to protocol 'SequenceType' - Swift 2.0
body: <p>I'm trying to reverse string in Swift 2.0 but I get an error on the string ifself.</p>
  
  <pre><code>func reverseString(string: String) -&gt; String {
      var buffer = ""
      for character in string {
          buffer.insert(character, atIndex: buffer.startIndex)
      }
  
      return buffer
  }
  </code></pre>
  
  <p>The error:</p>
  
  <pre><code>Type 'String' does not conform to protocol 'SequenceType'
  </code></pre>