Phonegap 3.6 iOS plugin not found - ios

Question

I know there are many topics handle this problem. But so far I was not able to understand why my own plugins are not getting called.
First of all:
I use phonegap 3.6.3, XCode 6.1, iOS 8.1 Beta
I am upgrading phonegap 2.9.0 to 3.6.3 with CLI. In 2.9.0 my Plugin 'Notification' worked just fine.
I read about upgrading from 2.x to 3.x and did all the stuff mentioned.
I added core plugins with CLI which (almost) all are working.
I read about adding plugins with CLI, but I don't have a git source, and I just want to put this plugin into xCode so that I can call it from js as CDVPlugin just as before in 2.9.0
My config.xml (in myApp/ folder) looks like:
<?xml version='1.0' encoding='utf-8'?>
<widget id="ch.itis.share" version="2.0" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
<name>MyApp</name>
<description>
A sample Apache Cordova application that responds to the deviceready event.
</description>
<author email="dev#cordova.apache.org" href="http://cordova.io">
Apache Cordova Team
</author>
<content src="index.html" />
<access origin="*" />
<feature name="com.popup.test.plugins.Notification" required="true">
<param name="ios-package" value="Notification" />
</feature>
</widget
I have my Notification.h and Notifiaction.m class files inside myApp/Plugins folder and added them to the Build Phase in XCode.
I executed the command 'cordova prepare' to update the staging folder.
The staging config.xml has never the defined obove included!
When I call the plugin from js like:
Cordova.exec(
function(result){//do something},
function(error){//do something},
"com.popup.test.plugins.Notification",
"initDeviceNotification",
[]);
All I get from Phonegap is:
Plugin 'com.popup.test.plugins.Notification' not found, or is not a CDVPlugin. Check your plugin mapping in config.xml.
I have many plugins like that. And nothing works anymore. Can anybody help?
UPDATE:
If I add the section manually to the staging config.xml it works. So how can I accomplish that the CLI prepare command will include my feature?