Reorganized folders to try to clean up the root folder a bit

public/assets/vendor/popper.js/docs/_includes/example40.html

@@ -0,0 +1,38 @@
+<div class="rel" id="example4reference1">
+    <p class="bold">Reference</p>
+</div>
+
+<div class="popper" id="example4popper1">
+    <p class="bold">Shifted popper</p>
+    <p class="thin">on start</p>
+    <div class="popper__arrow" x-arrow></div>
+</div>
+
+<div class="popper" id="example4popper2">
+    <p class="bold">Shifted popper</p>
+    <p class="thin">on end</p>
+    <div class="popper__arrow" x-arrow></div>
+</div>
+
+<script>
+document.addEventListener('DOMContentLoaded', function(){
+    var shiftStart = new Popper(example4reference1, example4popper1, {
+        placement: 'left-start',
+    });
+
+    var shiftEnd = new Popper(example4reference1, example4popper2, {
+        placement: 'bottom-end',
+    });
+
+}, false);
+</script>
+
+<style>
+    #example4popper1,
+    #example4popper2 {
+        width: 100px;
+    }
+    #example4popper1 {
+        height: 150px;
+    }
+</style>