update descrip of econ stats

Author: dsjoerg

app/views/home/econ_staircase.html

@@ -51,7 +51,7 @@
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       <p>See more about <a href="http://www.teamliquid.net/forum/viewmessage.php?topic_id=374400">TheStaircase</a> and <a href="saturation_speed">Saturation Speed</a>.</p>
-      <p>Games are 1v1 HotS Ladder, vs-AI excluded, from May 8, 2013 to {{ es['now'] | date:'MMM d, y'}}.</p>
+      <p>Games are 1v1 LotV Ladder, vs-AI excluded, over the past 180 days.</p>
       <p>Benchmarks are set by calculating the median time for the given matchup and league.  The times are then adjusted to the best-fit line from Silver to Masters using a standard least-squares regression.  (In the rare case when the best-fit line slopes the wrong way, we use the Masters time for all leagues)</p>
       <p>Stats are updated once per day.</p>
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