Default options for ClipboardAction too

src/clipboard-action.js

@@ -6,7 +6,7 @@ class ClipboardAction {
      * Initializes selection from either `text` or `target` property.
      * @param {Object} options
      */
-    constructor(options) {
+    constructor(options = {}) {
         this.action  = options.action;
         this.emitter = options.emitter;
         this.target  = options.target;

test/clipboard-action.js

@@ -35,9 +35,7 @@ describe('ClipboardAction', () => {
 
         it('should throw an error since neither "text" nor "target" were passed', done => {
             try {
-                new ClipboardAction({
-                    action: undefined
-                });
+                new ClipboardAction();
             }
             catch(e) {
                 assert.equal(e.message, 'Missing required attributes, use either "target" or "text"');