gistfile1.php

<?php
/**
 * Add Gravity Forms capabilities.
 */
add_filter( 'user_has_cap',
	function( $caps ) {
		if ( ! empty( $caps[ 'edit_pages' ] ) )
			// user has edit capabilities
			foreach ( array(
				'gravityforms_delete_entries',
				'gravityforms_edit_entries',
				'gravityforms_edit_entry_notes',
				'gravityforms_view_entries',
				'gravityforms_view_entry_notes',
			) as $cap )
				$caps[ $cap ] = TRUE;

		return $caps;
	}
);