title: timestamps in laravel 5.2.7 have default null values
body: <p>I'm using <code>Laravel Framework version 5.2.7</code>. I cretaed a database migration as shown below:</p>
  
  <pre><code>&lt;?php
  
  use Illuminate\Database\Schema\Blueprint;
  use Illuminate\Database\Migrations\Migration;
  
  class CreateLessonsTable extends Migration
  {
      /**
       * Run the migrations.
       *
       * @return void
       */
      public function up()
      {
          Schema::create('lessons', function (Blueprint $table) {
              $table-&gt;increments('id');
              $table-&gt;string('title');
              $table-&gt;text('body');
              $table-&gt;boolean('some_bool');
              $table-&gt;timestamps();
          });
      }
  
      /**
       * Reverse the migrations.
       *
       * @return void
       */
      public function down()
      {
          Schema::drop('lessons');
      }
  }
  </code></pre>
  
  <p>I went in the virtual machine's MySql database and used the command <code>desc lessons;</code>, this is what I'm getting: <a href="https://i.stack.imgur.com/VyN2L.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VyN2L.png" alt="enter image description here"></a> </p>
  
  <p>I don't understand why do <code>created_at</code> and <code>updated_at</code> colums have <code>NULL</code> as the <code>Default</code>.
  I went to Laravel 5.2 documentation and saw this:</p>
  
  <p><code>$table-&gt;timestamps();  Adds created_at and updated_at columns.</code>
  <code>$table-&gt;nullableTimestamps();  Same as timestamps(), except allows NULLs.</code></p>
  
  <p><strong>So according to the documentation <code>$table-&gt;timestamps();</code> should not allow <code>NULL</code> as <code>Default</code>. But still I'm getting <code>created_at</code> and <code>updated_at</code> colums having <code>NULL</code> as the <code>Default</code>. I'm confused. Please HELP!!</strong></p>
  
  <p>Infact these colums shoul be like this table:<a href="https://i.stack.imgur.com/VNVn0.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VNVn0.png" alt="enter image description here"></a></p>