Added meta keywords and descriptions.

Author: itsozz

accessible_graphics/resident_population_2018.html

@@ -4,6 +4,8 @@
         <title>Trafford Data Lab: Resident Population of Trafford</title>
         <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover"/>
         <meta charset="UTF-8"/>
+        <meta name="keywords" content="population, residents, people, trafford, open, data, open data, data visualisation, visualisation"/>
+        <meta name="description" content="Resident Population of Trafford based on the mid-2018 population statistics from the Office for National Statistics visualised by Trafford Data Lab."/>
 
         <link rel="stylesheet" href="../css/base.css"/>
         <link rel="stylesheet" href="../css/accessible_graphics.css"/>