warn about the doc being a wip

css/style.css

@@ -62,6 +62,11 @@ body .container p.note {
   padding: 5px 10px;
   border: 1px solid #BBBB7A;
 }
+body .container p.warning {
+  background: #ffDDDD;
+  padding: 5px 10px;
+  border: 1px solid #bb9999;
+}
 body .container .nav.amber-nav {
   background: #eee;
   border-radius: 10px;

css/style.less

@@ -76,6 +76,12 @@ body {
 				padding: 5px 10px;
 				border: 1px solid #BBBB7A;
 			}
+
+			&.warning {
+				background: #ffDDDD;
+				padding: 5px 10px;
+				border: 1px solid #bb9999;
+			}
 		}
 
 		.nav {

index.md

@@ -5,6 +5,11 @@ hide: true
 next: getting-started.html
 ---
 
+<p class="warning">
+This documentation is a work in progress. 
+</p>
+
+
 Welcome to the Amber documentation website!
 
 The purpose of this documentation is to guide you step by step from