Update project-list.html

_includes/project-list.html

 <div id="wrapper">
 <div class="container">
 	<div class="row">
-	        {% assign limit = 0 %}
+	        {% increment limit %}
 			{% assign sorted_projects = (site.projects | sort: 'date') %}
 			{% for project in sorted_projects reversed %}
 			    {% if limit < 12 %}