I want to download my list of contacts from Google+...

To export or download an archive of all your Google data from the various Google services you utilize on a daily basis, try using Google Takeout. Google Takeout currently offers exporting lists of contacts from your Google+ Circles or Gmail accounts, copies of your Google Docs, photos you have uploaded to Picasa, your basic personal data from your Google+ Profile, the full transcripts of your Google Voice log and Google+ Stream links you have shared. Google Takeout is super easy to use and very effective.