diff -r d4ec02c51c91 -r af15590802a4 assets/stylesheets/_bootstrap-sprockets.scss
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/assets/stylesheets/_bootstrap-sprockets.scss	Thu Jun 15 12:17:09 2017 +0200
@@ -0,0 +1,9 @@
+@function twbs-font-path($path) {
+  @return font-path($path);
+}
+
+@function twbs-image-path($path) {
+  @return image-path($path);
+}
+
+$bootstrap-sass-asset-helper: true;