notify user if serviceWorker support is missing

1 files changed, 2 insertions, 0 deletions

diff --git a/read.html b/read.html
index f035422..5d9b4ee 100644
--- a/read.html
+++ b/read.html
@@ -259,6 +259,8 @@
 
 					init_loader();
 				});
+		} else {
+			alert("Service worker support missing in browser (are you using plain HTTP?).");
 		}
 	});