Updated Readme to explain Overflow compensation.

Felix Queisler · Felix Queisler · commit 1184cda0dd4b · 2019-06-14T18:36:31.000+02:00
diff --git a/README.md b/README.md
@@ -1,5 +1,32 @@
 # arduino-timer
-Non-blocking abstracted timer library for use instead of the blocking delay() function.
+Non-blocking abstracted timer library for use instead of the blocking `delay()` function.
 
 ## How to use
 ...
+
+
+### Optional: Overflow Compensation
+By using `timer.start(0, true)` (only change from 0 if you want to set a custom
+starting point) you can activate overflow compensation which can recover over 2
+timer intervals to an expected rythm if some blocking code took longer than one
+timer interval.
+
+**Rythm example with 1000ms Timers:**
+
+``` NO COMPENSATION
+ ┌──┐    ┌───┐   ┌──┐    ┌───────────┐┌─┐     ┌─┐
+ │  │    │   │   │  │    │           ││ │     │ │
+─┴──┴────┴───┴───┴──┴────┴───────────┴┴─┴─────┴─┴────▶
+ 0       1       2       3       4       5       6  Seconds
+ ┌─────┐ ┌─────┐ ┌─────┐ ┌──────────┐ ┌─────┐ ┌─────┐
+ └─────┘ └─────┘ └─────┘ └──────────┘ └─────┘ └─────┘
+```
+
+``` COMPENSATING (recovers to expected rythm)
+ ┌──┐    ┌───┐   ┌──┐    ┌──────────┐┌─┐ ┌───┐   ┌─┐
+ │  │    │   │   │  │    │          ││ │ │   │   │ │
+─┴──┴────┴───┴───┴──┴────┴──────────┴┴─┴─┴───┴───┴─┴▶
+ 0       1       2       3       4       5       6  Seconds
+ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐ ┌─────┐
+ └─────┘ └─────┘ └─────┘ └─────┘ └─────┘ └─────┘ └─────┘
+```
