API AddTrackedAchievement

Tracks an achievement.
 AddTrackedAchievement(achievementID)
==Arguments==
:;achievementID: - ID of the achievement to add to tracking.
==Triggers events==
* 
==Details==
* A maximum of WATCHFRAME_MAXACHIEVEMENTS (10 as of 5.4.8) tracked achievements can be displayed by the WatchFrame at a time. 
* You may need to manually updated the AchievementUI and WatchFrame after calling this function.
==Patch changes==
==See also==
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