Update README.md

Felix · web-flow · commit dc5317b534d2 · 2019-06-14T19:32:02.000+02:00
run on time
diff --git a/README.md b/README.md
@@ -4,8 +4,8 @@ With this Library you can add **non-blocking timers** instead of the blocking
 It's relatively low-end, with no callback functions. The timer states need to
 be checked manually.
 
-**Warning:** This library doesn't work like a hardware timer and doesn't
-guarantee that code is being run in time.
+**Warning:** This library doesn't work like a hardware timer and can't
+guarantee that code is being run on time.
 
 ## How to use
 
