update footer and styles

_includes/footer.html

@@ -1,3 +1,13 @@
+<div class="wrapper">
+  <div class="site-footer">
+    <li>{{ site.title }}</li>
+
+    <li><a href="{{site.github.owner_url }}">Github</a></li>
+    {% if site.twitter_username %}
+      <li><a href="https://twitter.com/{{ site.twitter_username }}">Twitter</a></li>
+    {% endif %}
+  </div>
+</div>
    {% if site.google_analytics %}
       <script>
         (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){

assets/css/style.scss

@@ -2,3 +2,16 @@
 ---
 
 @import "{{ site.theme }}";
+
+.site-footer {
+  border-top: 1px solid gray;
+  padding: 3px 0;
+  position:fixed;
+  background: url(../images/nav-bg.gif) #353535;
+}
+
+.footer-heading {
+  font-size: 18px;
+}
+
+