Merge pull request #216 from chiefcll/feature-client-scope

Change clientutils to be able to set a global scope

@@ -456,7 +456,7 @@ Casper.prototype.die = function die(message, status) {
  */
 Casper.prototype.download = function download(url, targetPath, method, data) {
     "use strict";
-    var cu = require('clientutils').create(this.options);
+    var cu = require('clientutils').create(utils.mergeObjects({}, this.options));
     try {
         fs.write(targetPath, cu.decode(this.base64encode(url, method, data)), 'wb');
         this.emit('downloaded.file', targetPath);

@@ -57,7 +57,7 @@
 
         // public members
         this.options = options || {};
-
+        this.options.scope = this.options.scope || document;
         /**
          * Clicks on the DOM element behind the provided selector.
          *
@@ -243,7 +243,7 @@
          * @return NodeList|undefined
          */
         this.findAll = function findAll(selector, scope) {
-            scope = scope || document;
+            scope = scope || this.options.scope;
             try {
                 var pSelector = this.processSelector(selector);
                 if (pSelector.type === 'xpath') {
@@ -264,7 +264,7 @@
          * @return HTMLElement|undefined
          */
         this.findOne = function findOne(selector, scope) {
-            scope = scope || document;
+            scope = scope || this.options.scope;
             try {
                 var pSelector = this.processSelector(selector);
                 if (pSelector.type === 'xpath') {