Update the config.xml path in the XHR load eventListener (#42)

diff --git a/cordova-js-src/confighelper.js b/cordova-js-src/confighelper.js
index 017618f..10ee627 100644
--- a/cordova-js-src/confighelper.js
+++ b/cordova-js-src/confighelper.js
@@ -64,7 +64,7 @@
     xhr.addEventListener('load', xhrStatusChangeHandler);
 
     try {
-        xhr.open('get', '/config.xml', true);
+        xhr.open('get', 'config.xml', true);
         xhr.send();
     } catch (e) {
         fail('[Electron][cordova.js][readConfig] Could not XHR config.xml: ' + JSON.stringify(e));
diff --git a/cordova-lib/cordova.js b/cordova-lib/cordova.js
index d772bc0..d753cb9 100644
--- a/cordova-lib/cordova.js
+++ b/cordova-lib/cordova.js
@@ -882,7 +882,7 @@
     xhr.addEventListener('load', xhrStatusChangeHandler);
 
     try {
-        xhr.open('get', '/config.xml', true);
+        xhr.open('get', 'config.xml', true);
         xhr.send();
     } catch (e) {
         fail('[Electron][cordova.js][readConfig] Could not XHR config.xml: ' + JSON.stringify(e));