Sass mixin for including fonts for font-face

sass-mixin-font-face.scss

@mixin font-face($font-name, $file-name, $weight: normal, $style: normal) { 
  @font-face {
    font-family: quote($font-name);
    src: url($file-name + '.eot');
    src: url($file-name + '.eot?#iefix')  format('embedded-opentype'),
         url($file-name + '.woff') format('woff'),
         url($file-name + '.ttf')  format('truetype'),
         url($file-name + '.svg##{$font-name}')  format('svg');
    font-weight: $weight;
    font-style: $style;
  }
 }
 //Usage
 @include font-face('gotham', '/fonts/gotham');