Merge remote-tracking branch 'twbs/v4-dev' into v4-dev

docs/assets/js/src/application.js

@@ -33,7 +33,7 @@
     $('.bd-example-indeterminate [type="checkbox"]').prop('indeterminate', true)
 
     // Disable empty links in docs examples
-    $('.bd-example [href=#]').click(function (e) {
+    $('.bd-example [href="#"]').click(function (e) {
       e.preventDefault()
     })
 

docs/assets/scss/_clipboard-js.scss

 // clipboard.js
 //
-// Flash-based `Copy` buttons for code snippets.
+// JS-based `Copy` buttons for code snippets.
 
 .bd-clipboard {
   position: relative;