Added pair sorting example.

Vectorized · Vectorized · commit a661be053ae0 · 2020-06-10T07:55:50.000+08:00
diff --git a/README.md b/README.md
@@ -136,7 +136,7 @@ It helps me understand how it is used and plan new features.
 Change Log
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-**10 Oct 2020**
+**10 June 2020**
 
 - Added example for sorting pairs.
 
