Migration broken in sqlite

[CasperLaiTW]

The 2015_03_26_135428_update_name_alt_title_in_media_table migration would be boken in sqlite
because sql query is not supported.

Line 17~19

I think using doctrine/dbal and update code be made compatible with other databases

Schema::table('media', function(Blueprint $table) {
      $table->string('name')->nullable()->change();
      $table->string('alt')->nullable()->change();
      $table->string('title')->nullable()->change();
});