{!! Form::model($gallery,['id'=>"my-awesome-dropzone",'class'=>'dropzone dz-clickable','files'=>'true']) !!}
{!! Form::text('title',null,['class'=>'form-control','placeholder'=>'Название галереи']) !!}
<button type="submit" class="btn btn-primary">Обновить!</button>
<div class="dropzone-previews"></div>
{!! Form::close() !!}

или вот так

<form 'id'="my-awesome-dropzone" 'class'=>'dropzone dz-clickable', enctype="multipart/form-data">
<input type="text" name="title" class="form-control"placeholder="название галереи" />
<button type="submit" class="btn btn-primary">Обновить!</button>
<div class="dropzone-previews"></div>
</form>