Great, now git pull worked.

See it created many new files ? Some of the new files are

Code:
 create mode 100644 app/database/migrations/2015_01_09_084809_add_type_in_images.php
 create mode 100644 app/database/migrations/2015_01_10_040524_add_default_image_privacy_in_users.php
 create mode 100644 app/database/migrations/2015_01_10_062030_create_settings.php
 create mode 100644 app/database/migrations/2015_01_13_053228_create_spam_reports.php
That means, new database migrations are added to project.

You can migrate these files by running command

Code:
php artisan migrate
That command will read folder app/database/migrations/ and migrate files that are yet to migrate, so your application have newer database tables and table structure.

EDIT: Corrected spelling for artisan