Adding missing location column (#190)

Without the Location column in the followers table, Twint is unable to save --user-full details.

twint/storage/db.py

@@ -73,6 +73,7 @@ def init(db):
                     name text,
                     username text not null,
                     bio text,
+                    location text,
                     url text,
                     join_date text not null,
                     join_time text not null,