ES6 refactor (#409)

* little fix

* little fix /2

* test/clipboard.js refactored

* emitter: emitter --> emitter

* Examples in ES6

* es6

* back to original code

* script > npm test

* script > npm test not necessary

* updating modules

* removing export default

src/clipboard-action.js

@@ -64,7 +64,7 @@ class ClipboardAction {
         this.fakeElem.style[ isRTL ? 'right' : 'left' ] = '-9999px';
         // Move element to the same position vertically
         let yPosition = window.pageYOffset || document.documentElement.scrollTop;
-        this.fakeElem.style.top = yPosition + 'px';
+        this.fakeElem.style.top = `${yPosition}px`;
 
         this.fakeElem.setAttribute('readonly', '');
         this.fakeElem.value = this.text;

src/clipboard.js

@@ -52,7 +52,7 @@ class Clipboard extends Emitter {
             action  : this.action(trigger),
             target  : this.target(trigger),
             text    : this.text(trigger),
-            trigger : trigger,
+            trigger,
             emitter : this
         });
     }