Add show more collections button (#591)
Add show more collections button (#591)

* Add show more collections button

* fix lint

andymutton/beta,andymutton/v2,andymutton/v2,customelements/v2,webcomponents/webcomponents.org,customelements/v2,customelements/v2,webcomponents/webcomponents.org,andymutton/v2,customelements/v2,andymutton/beta,andymutton/beta,andymutton/v2,webcomponents/webcomponents.org,andymutton/beta