Add store module for data persistence
Add store module for data persistence

- Create accounts object reference by the ID for each account, with the
configuration object for the Twit framework for the Twitter API
- Add global references, such as the consumer key, secret and callback
for Twitter authentication and request signing
- Add settings for things such as streaming, refresh interval and AM/PM
- Add property for columns
- Add initial properties to each account object that would
(hypothetically) store tweets, the newest IDs and the oldest IDs for
each endpoint... (a work in progress)
- The data is also NOT persisted lol, because of Electron, so that still
needs implementation

kincaidoneil/postplus,kincaidoneil/postplus