added breadcrumbs

_includes/breadcrumb.html

@@ -0,0 +1,31 @@
+{% comment %}
+
+http://stackoverflow.com/questions/9612235/what-are-some-good-ways-to-implement-breadcrumbs-on-a-jekyll-site
+https://github.com/huonw/huonw.github.io/blob/master/_layouts/default.html#L17
+
+{% endcomment %}
+
+
+{% capture url_parts %} {{ page.url | remove: "/index.html" | replace:'/'," " }}{% endcapture %}
+{% capture num_parts %}{{ url_parts | number_of_words | minus: 1 }}{% endcapture %}
+{% assign previous="" %}
+<nav class="breadcrumbs" role="menubar" aria-label="breadcrumbs">
+ {% if num_parts == "0" or num_parts == "-1" %}
+  <a href="{{ site.url }}">Start</a>
+ {% else %}
+  <a href="{{ site.url }}">Start</a>
+
+  {% for unused in page.content limit:num_parts %}
+   {% capture first_word %}{{ url_parts | truncatewords:1 | remove:"..."}}{% endcapture %}
+   {% capture previous %}{{ previous }}/{{ first_word }}{% endcapture %}
+
+   <a href="{{previous}}">{{ first_word }}</a>
+
+   {% capture url_parts %}{{ url_parts | remove_first:first_word }}{% endcapture %}
+  {% endfor %}
+ {% endif %}
+  <a class="current" href="#">{{ page.title }}</a>
+</nav>
+
+    
+