Fix travis build

Author: TuxCoding

.travis.yml

@@ -11,7 +11,7 @@ install:
  - composer self-update
  - composer install --prefer-source --no-interaction --dev
  # Setup the database with sample data
- - php artisan migrate --seed
+ - php artisan migrate --seed --force
  # Install elixir and gulp
  - npm install
  # Syntax checker for php files