Merge pull request #595 from Financial-Times/favicon

Add favicon to docs

_includes/head.html

@@ -6,7 +6,13 @@
 		{% if page.title == 'Home' %}Origami: unifying our brand, making development faster{% endif %}
 	</title>
 	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
-	<link rel="icon" href="/img/favicon.png" type="image/x-icon" />
+	<link rel="icon" type="image/png" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&width=16&height=16&format=png" sizes="16x16">
+	<link rel="icon" type="image/png" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&width=32&height=32&format=png" sizes="32x32">
+	<link rel="icon" type="image/png" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&width=96&height=96&format=png" sizes="96x96">
+	<link rel="icon" type="image/png" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&width=128&height=128&format=png" sizes="128x128">
+	<link rel="icon" type="image/png" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&width=196&height=196&format=png" sizes="196x196">
+	<link rel="icon" type="image/png" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&width=196&height=196&format=png" sizes="196x196">
+	<link rel="icon" type="image/svg+xml" href="https://www.ft.com/__origami/service/image/v2/images/raw/ftlogo-v1%3Aorigami?source=origami-docs&format=svg" sizes="any">
 
 	<script>
 		var cutsTheMustard = ('querySelector' in document && 'localStorage' in window && 'addEventListener' in window);