README.md in rediska-0.3.1 vs README.md in rediska-0.4.0

- old
+ new

@@ -180,9 +180,10 @@
 * ZREM
 * ZREMRANGEBYRANK
 * ZREVRANGE
 * ZREVRANGEBYSCORE
 * ZREVRANK
+* ZSCAN
 * ZSCORE
 
 ## Credits and Contributors
 
 This gem was inspired by (and originally forked from) the [fakeredis](https://github.com/guilleiguaran/fakeredis) gem.