spell out error msg if you don't Olm.init

fdf25eb3 · Matthew Hodgson · 83bf351a · fdf25eb3
Commit fdf25eb3 authored May 16, 2020 by Matthew Hodgson
--- a/javascript/README.md
+++ b/javascript/README.md
@@ -2,7 +2,8 @@ Olm
 ===

 Note: before using any of the olm functions, you must call `Olm.init()`, and
-wait for the promise to resolve.
+wait for the promise to resolve, otherwise you will get errors like:
+`Uncaught TypeError: Olm.Account is not a constructor`

 Example: