Add changelog note for issue 215.

Malte Rohde · Malte Rohde · commit 155cfd8d7f80 · 2016-04-26T15:14:24.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,7 @@
 0.5.2 (Next)
 ============
 
+* [#215](https://github.com/ruby-grape/grape-entity/pull/217): `#delegate_attribute` should not delegate to methods included with `Kernel`. - [@maltoe](https://github.com/maltoe)
 * Your contribution here.
 
 0.5.1 (2016-4-4)
