Update changelog

sandeepmistry · sandeepmistry · commit b7af9868fe72 · 2016-09-16T09:30:04.000-04:00
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,6 +1,6 @@
 WiFi101 ?.?.? - ????.??.??
 
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+* Changed WiFi.ping(...) to return round trip time on success, negative value on error. Thanks @PKGeorgiev
 
 WiFi101 0.10.0 - 2016.09.08
 
