Add scenario for pipe as data table contents

Look like [SpecFlow allows escapeing pipes](http://stackoverflow.com/questions/12960803/can-i-escape-the-pipe-in-specflow-or-gherkin).

But that seems a bit off. On first glance datatables may look like `|`-delimited, but clearly they are marked up in a fixed width fashion. With `|` and whitespace stripped on conversion.