// Functions :: str-replace
// Source: http://hugogiraudel.com/2014/01/13/sass-string-replacement-function/

@function _str-replace($string, $search, $replace: "") {

  $index: str-index($string, $search);
  @if $index {
    @return str-slice($string, 1, $index - 1) + $replace + _str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
  }
  @return $string;
}