title: php artisan tinker >> schema drop(' ') causing error
body: <p>At first I got error in::
  php artisan migrate:rollback</p>
  
  <blockquote>
    <p>[ErrorException]<br>
        Undefined index: 2016_09_29_105926_create_author_table</p>
  </blockquote>
  
  <p>to solve it I tried tinker.. but it didn't work</p>
  
  <pre><code>php artisan tinker
  Psy Shell v0.7.2 (PHP 5.6.8 ΓÇö cli) by Justin Hileman
  &gt;&gt;&gt; schema::drop('larw')
  PHP Fatal error:  Class 'schema' not found in eval()'d code on line 1
  </code></pre>