clarify documentation about sortedUniq (#3310)

Nisse Bergman · jdalton · commit 03e23ecc196d · 2017-08-09T00:51:47.000-07:00
clarify that sortedUniq only works on sorted arrays
diff --git a/sortedUniq.js b/sortedUniq.js
@@ -1,8 +1,10 @@
 import baseSortedUniq from './.internal/baseSortedUniq.js'
 
 /**
- * This method is like `uniq` except that it's designed and optimized
+ * This method is like `uniq` except that it only works
  * for sorted arrays.
+ * If the input array is known to be sorted `sortedUniq` is 
+ * faster than `uniq`.
  *
  * @since 4.0.0
  * @category Array
