If I follow this steps to create a new app:
Rubens-MacBook-Pro:~ rlopez$ npm install -g cordova ionic Rubens-MacBook-Pro:~ rlopez$ ionic start myApp tabs Rubens-
Only for OSX --- Go to Applications Folder from finder and Simply rename Android Studio App Package name by removing space between.
Before : Android Studio After: AndroidStudio
There is no issue of permissions by default just the space was the problem.
Cheers !