Default to empty icon-font.scss file

content/scss/_icon-font.scss

@@ -1,42 +1,4 @@
-/*
-  Icon Font: icon-font
-*/
-
-@font-face {
-  font-family: "icon-font";
-  src: url("/fonts/icon-font.eot");
-  src: url("/fonts/icon-font.eot?#iefix") format("embedded-opentype"),
-       url("/fonts/icon-font.woff2") format("woff2"),
-       url("/fonts/icon-font.woff") format("woff"),
-       url("/fonts/icon-font.ttf") format("truetype"),
-       url("/fonts/icon-font.svg#icon-font") format("svg");
-  font-weight: normal;
-  font-style: normal;
-}
-
-@media screen and (-webkit-min-device-pixel-ratio:0) {
-  @font-face {
-    font-family: "icon-font";
-    src: url("/fonts/icon-font.svg#icon-font") format("svg");
-  }
-}
-
-[data-icon]:before { content: attr(data-icon); }
-
-[data-icon]:before,
-.if-example:before {
-  display: inline-block;
-  font-family: "icon-font";
-  font-style: normal;
-  font-weight: normal;
-  font-variant: normal;
-  line-height: 1;
-  text-decoration: inherit;
-  text-rendering: optimizeLegibility;
-  text-transform: none;
-  -moz-osx-font-smoothing: grayscale;
-  -webkit-font-smoothing: antialiased;
-  font-smoothing: antialiased;
-}
-
-.if-example:before { content: "\f100"; }
+// This is an empty placeholder file. You need this
+// when you use icon font generation in Bedrock.
+// Check out README.md on how to enable
+// icon font generation.