* Implement automatic refreshing

* Remove force unwrapping

#30 (review)

* Change refresh interval to 15 min

* Remove whitespace

Just following the implicit code style of the project ;-)

* Remove lib folder

* Add Carthage folder to gitignore

* Integrate Carthage

* Remove code signing

* Add basic implementation for notifications

* Rename displayNotifcationIfNecessary function

* Separate new episode logic in a new function

* Implement way for users to disable notifications

See #39 (comment)