Update cirru, styles and get styles and js from cdn

Author: ttu

cirru/index.cirru

@@ -48,7 +48,7 @@ body * {
     flex: 1;
     -webkit-flex: 1;
     -ms-flex: 1;
-    max-width: 590px;
+    max-width: 50%;
     margin: 0 10px;
 }
 
@@ -76,6 +76,10 @@ body * {
     right: 0;
 }
 
+.hljs {
+    background-color: transparent;
+}
+
 #note {
     font-size: 1.5em;
     color: #fff;