rename

scss/CrispyBoilerplate.scss

@@ -2,7 +2,7 @@
     '../../node_modules/normalize.css/normalize.css'
 
     'functions/units',
-    'functions/z-index',
+    'functions/zIndex',
 
     'mixins/clearfix',
     'mixins/fontSize',

scss/example.scss

@@ -3,6 +3,14 @@
 
 @include cripsy-boilerplate-normalize();
 @include cripsy-boilerplate-body();
-@include crispy-boilerplate-heading();
+
+@include crispy-boilerplate-heading() {
+    text-decoration: underline;
+};
+
 @include cripsy-boilerplate-icon();
 @include cripsy-boilerplate-list();
+
+.clearfix {
+    @include crispy-boilerplate-clearfix();
+}

scss/mixins/clearfix.scss → scss/mixins/_clearfix.scss

@@ -6,7 +6,7 @@
  *
  */
 
-@mixin clearfix() {
+@mixin crispy-boilerplate-clearfix() {
     &::before,
     &::after {
         display: table;