title: Read All Lines of BufferedReader in Scala into a String
body: <p>How can I read <strong>all</strong> of a <code>BufferedReader</code>'s lines and store into a String?</p>
  
  <pre><code> val br = new BufferedReader(...)
   val str: String = getAllLines(br) // getAllLines() -- is where I need help
  </code></pre>
  
  <p>Similar to this <a href="https://stackoverflow.com/questions/5221524/idiomatic-way-to-convert-an-inputstream-to-a-string-in-scala">question</a>.</p>