get list of streams by calling Zulip API, not using .txt file
Merge pull request #23 from dariajung/patch-1

get list of streams by calling Zulip API, not using .txt file
removed subscriptions-file, rendered unnecessary thanks to Darias change.
removed .DS_Store
updated name
Font size: 30 -> 22
Merge pull request #25 from marqsm/shrink-text

Font size: 30 -> 22
Remove unused old code.