Twit 04 Persist tweets in a database

Creates a database to store all tweets retrieved from the Twitter REST API. Swaps out the base adapter in favour of a cursor adapter to support the database.
So you mean do something like this? :smile: 
```
    public enum COLUMNS{
        COLUMN_ID,
        COLUMN_SCREEN_NAME,
        COLUMN_LOCATION,
        COLUMN_TWEET_TEXT,
        COLUMN_THUMB_IMAGE,
        COLUMN_CATEGORY;

        public static String[] names() {
            COLUMNS[] columns = values();
            String[] names = new String[columns.length];

            for (int i = 0; i < columns.length; i++) {
                names[i] = columns[i].name();
            }

            return names;
        }
    }
```