Update date (#69)

Vignesh Raja · web-flow · commit ef5d7f9f3ab2 · 2017-01-31T13:25:20.000-08:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## 1.4.0
 
-January 30, 2017
+January 31, 2017
 
 - Add `sessionId` parameter to `activate` and `track` and include in event payload
 - Append datafile `revision` to event payload
