created api templates directoty and information page

advisor/api/templates/api.html

+{% extends 'layouts/base.html' %}
+
+{% block title %}
+GMU Advisor | API
+{% endblock %}
+
+{% block content %}
+
+<div class="page-header" id="banner">
+  <div class="row">
+    <div class="col-md-12 text-center">
+      <h1>Advisor's API</h1>
+    </div>
+  </div>
+</div>
+
+<p>Through the Advisor API, you can access...</p>
+
+<p>Course information</p>
+
+<p>Program information</p>
+
+{% endblock %}