first commit
First working version. Integrating with MailChimp well.
Fixed a warning.
Removed some debug stuff.
.2.2 with readme. Double opt-in setting added.
* Added pmpro_mailchimp_listsubscribe_fields filters to add fields passed the listSubscribe API call.
* Changed some things to make sure that the user cache is clean and the listSubscribe call happens late enough so that first and last name are populated.
Updating email addresses in MailChimp lists if a user's email address is changed.
Fixed name in readme. Oops.
Updated pmpro_mailchimp_listsubscribe_fields filter to pass the $list_user object along as well.
Updated version in Readme
Tested on 3.6
Added option to turn of unsubscribes entirely. If you manage multiple lists in MailChimp and have users subscribe outside of WordPress, you may want to choose No so contacts aren't unsubscribed from other lists when they register on your site.
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Readme update
Merge remote-tracking branch 'upstream/master'

Conflicts:
	readme.txt