Copy tweaks - brevity FTW

lib/site_template/index.html

@@ -2,9 +2,10 @@
 layout: default
 ---
 
-  <h1>Blog Posts</h1>
 <div class="home">
 
+  <h1>Posts</h1>
+
   <ul class="posts">
     {% for post in site.posts %}
       <li><span class="post-date">{{ post.date | date: "%b %-d, %Y" }}</span> <a class="post-link" href="{{ post.url }}">{{ post.title }}</a></li>