ios: core data - create and add managed user model
ios: cosmetic changes

rename root view controller to feed view controller class
ios: core data - add mappedKeyName for email att.
ios: app delegate - persistance setup

w/ Magical record, see: https://github.com/magicalpanda/MagicalRecord
ios: rss request - implement login handler via API
ios: login vc - implement login handler
ios: login vc - cosmetic change
ios: re-organize project folders
ios: rss request - implement register handler

through rss API
ios: rss request - register method refactoring
ios: register vc implement register method handler
ios: login vc - add login delegate protocol

in order to handle the login success call back from the
feed vc
ios: login vc - call delegate + pop vc

after a login success
ios: feed vc - conform to login vc protocol

+ scaffold implementation
update gitignore - especially for android studio
ios: scaffold implementation for feeds fetching