On/off Switch

Thanks for the reply Michael. Well I tried to create a custom field and while I was able to render the markup, the post was not saving the meta data.

The code I used is given below:

function cmb2_render_onoffswitch( $field, $escaped_value, $object_id, $object_type, $field_type_object ) {

	?>
	<div class="onoffswitch">
	<?php echo $field_type_object->input( array( 'type' => 'checkbox', 'class' => 'onoffswitch-checkbox', 'name' => 'onoffswitch', 'id' => 'myonoffswitch', 'value' => 'onoffswitch' ) ); ?>
	    <label class="onoffswitch-label" for="myonoffswitch">
	        <span class="onoffswitch-inner"></span>
	        <span class="onoffswitch-switch"></span>
	    </label>
	</div>
	<?php

}
add_action( 'cmb2_render_onoffswitch', 'cmb2_render_onoffswitch', 10, 5 );