Add a skeleton structure for the Japanese translation

_includes/foot.html

@@ -1,5 +1,6 @@
 <footer class="foot wrap">
     <hr/>
+    <p>Translations: <a href="{{ site.url }}">English</a> &middot; <a href="{{ site.url}}/jp">日本語</a></p>
     <p>
         This guide is being discussed on Hacker News [
             <a href="https://news.ycombinator.com/item?id=9941150">1</a>,

_includes/sqlstyle.guide.jp.md

@@ -0,0 +1,3 @@
+# SQL style guide - Japanese translation
+
+...content goes here...

_layouts/default.html

@@ -6,7 +6,7 @@
         <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1">
         <title property="og:title">{{ site.name }}</title>
         <link href="http://fonts.googleapis.com/css?family=PT+Sans|Roboto+Slab|Droid+Sans+Mono" rel="stylesheet" type="text/css">
-        <link rel="stylesheet" href="style.css">
+        <link rel="stylesheet" href="{{ site.url }}/style.css">
 
         <meta content="website" property="og:type">
         <meta content="{{ site.url }}" property="og:url">

jp/index.md

@@ -0,0 +1,8 @@
+---
+layout: default
+---
+
+* TOC
+{:toc}
+
+{% include sqlstyle.guide.jp.md %}