add worker script for mailchimp subscribe

add mailchimp api call, WIP

fix the mailchimp API call

switch to using requests for HTTP calls

setup config and add subscribed_to_newsletter attr

update to use the mailchimp config vars
Merge branch 'develop' of https://github.com/asm-products/cloudroutes-service into feature/mailchimp-autosubscribe
add --refresh option and persist with key

fix config yml file and add to gitignore for crbridge

add config and --refresh option for mailchimp

remove debug code and add comment

small typos
Merge pull request #31 from themetric/feature/mailchimp-autosubscribe

Feature/mailchimp autosubscribe