title: To add line break in snack bar Angular 4
body: <p>I want to add multiline text message with proper line breaks that are provided by me.</p>
  <pre><code>  this.sampleStringErrorMsg = 'The sample is not valid:\n' +
              '- The key and key value are required in the sample.\n ' +
              '- The delimiter must be entered when the sample contains several key-value pairs.\n' +
              '- The delimiter must not be equal to the key or key value.\n';
  </code></pre>
  <p><code>sampleStringErrorMsg</code> is the text I show in snackbar.
  Right now snackbar ommit <code>\n</code> from the text and aligns the the whole message as shown in the image below
  <a href="https://i.stack.imgur.com/QYnNl.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/QYnNl.jpg" alt="enter image description here" /></a></p>