add a call-to-action partial

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

themes/openpowerfoundation/layouts/partials/calltoaction.html

@@ -0,0 +1,13 @@
+<section id="call-to-action">
+<div class="container">
+	<div class="row">
+		<div class="col-lg-8 text-center text-lg-left">
+			<h3 class="cta-title">{{ .Param "calltoaction.title" }}</h3>
+			<p class="cta-text">{{ .Param  "calltoaction.text"}}</p>
+		</div>
+		<div class="col-lg-4 cta-btn-container text-center">
+			<a class="cta-btn align-middle" href="{{ .Param "calltoaction.link" }}">{{ .Param "calltoaction.button" }}</a>
+		</div>
+	</div>
+</div>
+</section>