[CB-7766] Add quirk note about android dateToString
A note to clarify, that the value obtained using dateToString uses the
UTS#35 and is not completely aligned with ICU standard.
diff --git a/doc/index.md b/doc/index.md
index 57cbb59..c588994 100644
--- a/doc/index.md
+++ b/doc/index.md
@@ -195,6 +195,14 @@
function () { alert('Error getting dateString\n'); },
{ formatLength: 'short', selector: 'date and time' }
);
+### Android Quirks
+- `formatLength` options are a subset of Unicode
+ [UTS #35](http://unicode.org/reports/tr35/tr35-4.html). The default option
+ `short` depends on a user selected date format within
+ `Settings -> System -> Date & time -> Choose date format`,
+ which provide a `year` pattern only with 4 digits, not 2 digits.
+ This means that it is not completely aligned with
+ [ICU](http://demo.icu-project.org/icu-bin/locexp?d_=en_US&_=en_US).
### Windows Phone 8 Quirks
