Closes #333, New version availability check will now checks http://grafanarel.s3.amazonaws.com/latest.json if there is a new version. And the link now points to http://grafana.org/download

tasks/build_task.js

@@ -32,7 +32,7 @@ module.exports = function(grunt) {
             },
             {
               pattern: /@grafanaVersion@/g,
-              replacement: 'v<%= pkg.version %>'
+              replacement: '<%= pkg.version %>'
             }
           ]
         }