I’ve been struggling with XCode to make my app running after i renamed the project.

####To rename your iOS build:

1. run command: cordova platform rm ios

2. change your app name in *config.xml*

3. run command cordova platform add ios

####The platform will be create normally, plugins are installed. But XCode build states that there are some files missing

You need this step to solved the problem:

copy the ios src of the plugin to 
projektname/platforms/ios/Appname/Plugins/plugin.name.space

It works for me!!