improve CHANGELOG [ci skip]

Francesco Rodriguez · Francesco Rodriguez · commit 7fa261f13067 · 2013-02-28T23:06:01.000-05:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## unreleased
 
-*   Allow to use non-proc object in `cache_path` option.
+*   Allow to use non-proc object in `cache_path` option. You can pass an object that
+    responds to a `call` method.
 
     Example:
 
