fix changelog info for ruby-grape#181 under wrong section

Author: Ben Rosenblum

CHANGELOG.markdown

@@ -1,7 +1,10 @@
+Next Release
+=================
+* [#181](https://github.com/intridea/grape/pull/181): Fix: Corrected JSON serialization of nested hashes containing `Grape::Entity` instances - [@benrosenblum](https://github.com/benrosenblum).
+
 0.2.1 (7/11/2012)
 =================
 
-* [#181](https://github.com/intridea/grape/pull/181): Fix: Corrected JSON serialization of nested hashes containing `Grape::Entity` instances - [@benrosenblum](https://github.com/benrosenblum).
 * [#186](https://github.com/intridea/grape/issues/186): Fix: helpers allow multiple calls with modules and blocks - [@ppadron](https://github.com/ppadron).
 * [#188](https://github.com/intridea/grape/pull/188): Fix: multi-method routes append '(.:format)' only once - [@kainosnoema](https://github.com/kainosnoema).
 * [#64](https://github.com/intridea/grape/issues/64), [#180](https://github.com/intridea/grape/pull/180): Added support to get request bodies as parameters - [@bobbytables](https://github.com/bobbytables).