news.md in red-arrow-0.2.2

- old
+ new

@@ -1,6 +1,17 @@
 # News
 
+## 0.2.2 - 2017-04-24
+
+### Improvements
+
+  * `Arrow::RecordBatch#each`: Supported reusing record object for
+    performance.
+
+  * ``Arrow::IO`: Unified into `Arrow`.
+
+  * ``Arrow::IPC`: Unified into `Arrow`.
+
 ## 0.2.1 - 2017-03-23
 
 ### Improvements
 
   * Added `Arrow::IPC::FileReader#each`.