update changelog

Author: dakrone

changelog.org

@@ -54,6 +54,9 @@ List of user-visible changes that have gone into each release
   and clean up whitespace for new clojure-mode
 - Merged https://github.com/dakrone/clj-http/pull/171 to support SOCKS proxies
 * Work log
+** 2014-08-07
+- merged https://github.com/dakrone/clj-http/pull/213 to allow passing in an
+  already existing keystore, not just a path
 ** 2014-07-27
 - merged https://github.com/dakrone/clj-http/pull/211 to detect charset encoding
   for url-encode