Shopify - Load 'collections/all' page on my front page

How to load http://ift.tt/1DHzQYU content to my shopify frontpage http://ift.tt/1AU7698

I figured out a way that I hardcode <script>window.location.href='collections/all'</script> on index.liquid, but I'm pretty sure thats' not a clean way.

and I try to copy whole collection.liquid's code to index.liquid, but it prompt me Liquid error: Array 'collection.all.products' is not paginateable. error and no product showing the index.liquid page.

Any idea how to load collections/all on shopify's front page?

I'm using Timber Framework as people recommend to start to build a theme

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