Clay Buttons with icons has no padding

[carloslancha]

Lexicon defines a type of buttons with icon and text:

Right now we are using the following markup

<button class="btn btn-primary" type="button">
   <svg aria-hidden="true" class="lexicon-icon lexicon-icon-plus">
      <title>plus</title>
      <use ...></use>
   </svg>
   Default Icon Position
</button>

but there're no padding between icon and label