Merge pull request #330 from adjust/uninstall-readme-update

Uninstall tracking update in push token README section

Author: Chris Marshall

README.md

@@ -764,6 +764,8 @@ AdjustAttribution attribution = Adjust.getAttribution();
 
 ### <a id="push-token"></a>Push token
 
+Push tokens are used for Audience Builder and client callbacks, and they are required for uninstall and reinstall tracking.
+
 To send us the push notification token, add the following call to Adjust once you have obtained your token or when ever it's value is changed:
 
 ```java
@@ -778,8 +780,6 @@ We still support the previous signature of the same method:
 Adjust.setPushToken(pushNotificationsToken);
 ```
 
-Push tokens are used for Audience Builder and client callbacks, and they are required for the upcoming uninstall tracking feature.
-
 ### <a id="track-additional-ids"></a>Track additional device identifiers
 
 If you are distributing your app **outside of the Google Play Store** and would like to track additional device identifiers (IMEI and MEID), you need to explicitly instruct the Adjust SDK to do so. You can do that by calling the `setReadMobileEquipmentIdentity` method of the `AdjustConfig` instance and passing a `true` parameter to it. **The Adjust SDK does not collect these identifiers by default**.