Adding new heart beat / ping feature to CHANGELOG.md.

1 files changed, 1 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba192ecddd..aeee7a6143 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ This is a changelog for Piwik platform developers. All changes for our HTTP API'
 
 ### New features 
 * The JavaScript Tracker does now track outlinks and downloads if a user opens the context menu if the `enabled` parameter of the `enableLinkTracking()` method is set to `true`. To use this new feature use `tracker.enableLinkTracking(true)` or `_paq.push(['enableLinkTracking', true]);`. This is not industry standard and is vulnerable to false positives since not every user will select "Open in a new tab" when the context menu is shown. Most users will do though and it will lead to more accurate results in most cases.
+* The JavaScript Tracker now contains the 'heart beat' feature which can be used to obtain more accurate visit lengths by periodically sending 'ping' requests to Piwik. To use this feature use `tracker.setHeartBeatTimer();` or `_paq.push(['setHeartBeatTimer']);`. By default, a ping request will be sent every 15 seconds. You can specify a custom time by passing an argument, eg, `tracker.setHeartBeatTimer(10);` or `_paq.push(['setHeartBeatTimer', 10]);`.
 
 ### Library updates
 * Updated pChart library from 2.1.3 to 2.1.4. The files were moved from the directory `libs/pChart2.1.3` to `libs/pChart`