use markdown for title and introduction

src/book.css

@@ -28,7 +28,7 @@ div#title h1 {
     font-size: 72px;
     margin-top: 4em;
 }
-div#title h4 {
+div#title h3 {
     font-size: 24px;
     margin-top: 4em;
     margin-bottom: 18em;

src/introduction.html

@@ -1,30 +0,0 @@
-<h2>Introduction</h2>
-  
-<p>Go is an open-source programming language designed for
-   building simple, fast, and reliable software. It's
-   powerful to use and fun to learn.</p>
-
-<p>This book is a hands-on introduction to Go. It gives
-   you the tools you need to understand the why of Go and
-   how to write real Go programs.</p>
-
-
-<h3>Intended Audience</h3>
-
-<p>This book is intended for experienced programmers who
-   may be new to Go. If you have previous experience with
-   languages like Ruby, Python, Javascript, C#, or Java,
-   you should find this book immediately approachable even
-   if this is your first introduction to Go. Even if
-   you've worked with Go before, you may find that the
-   material covers ideas and techniques that you haven't
-   seen elsewhere.</p>
-
-
-<h3>An Example-Based Approach</h3>
-
-<p>We believe that programmers learn to program by writing
-   programs. <i>Go by Example</i> therefore teaches Go
-   exclusively via working example programs, with each
-   chapter trying to provide the programmer a new tool for
-   writing her own programs.</p>

src/introduction.md

@@ -0,0 +1,28 @@
+## Introduction
+  
+Go is an open-source programming language designed for
+building simple, fast, and reliable software.
+It's powerful to use and fun to learn.
+
+This book is a hands-on introduction to Go. It gives you
+the tools you need to understand the why of Go and how to
+write real Go programs.
+
+### Intended Audience
+
+This book is intended for experienced programmers who may
+be new to Go. If you have previous experience with
+languages like Ruby, Python, Javascript, C#, or Java, you
+should find this book immediately approachable even if
+this is your first introduction to Go. Even if you've
+worked with Go before, you may find that the material
+covers ideas and techniques that you haven't seen
+elsewhere.
+
+### An Example-Based Approach
+
+Programmers learn to program by writing programs.
+_Go by Example_ therefore teaches Go exclusively via
+working example programs, with each chapter trying to
+provide the programmer a new tool for writing her own
+programs.

src/title.html

@@ -1,5 +0,0 @@
-<div class="chapter" id="title">
-  <h1>Go by Example</h1>
-
-  <h4>Mark McGranaghan</h4>
-</div>

src/title.md

@@ -0,0 +1,3 @@
+# Go by Example
+
+### Mark McGranaghan