<!-- insert_before '[data-hook="homepage_products"]' -->
<% content_for :spree_slider do %>
  <%= render 'spree/shared/slider' %>
<% end %>
<!-- insert_before '[data-hook="homepage_products"]' -->
<% slides = Spree::Slide.published %>
<%= render partial: 'spree/shared/slider', locals: { slider: slides } %>

Fix default home Deface slider insertion.
Fix default home Deface slider insertion.

Added `slider` local variable to prevent undefined error.
Mirrors what is suggested in Readme for consistency.
Variable is kept on a separate line for easy Deface overriding by end user.
Also removes problematic `content_for`
Fixes #12 and #13
