Update changelog to register the last PR of the 0.9.2 version

Author: pitbulk

changelog.md

@@ -1,5 +1,6 @@
 # RubySaml Changelog
-### 0.9.2 (Apr 1, 2015)
+### 0.9.2 (Apr 28, 2015)
+* [#216](https://github.com/onelogin/ruby-saml/pull/216) Add fingerprint algorithm support
 * [#218](https://github.com/onelogin/ruby-saml/pull/218) Update README.md
 * [#214](https://github.com/onelogin/ruby-saml/pull/214) Cleanup `SamlMessage` class
 * [#213](https://github.com/onelogin/ruby-saml/pull/213) Add ability to sign metadata. (Improved)
@@ -14,6 +15,7 @@
 * [#179](https://github.com/onelogin/ruby-saml/pull/179) Add support for setting the entity ID and name ID format when parsing metadata
 * [#175](https://github.com/onelogin/ruby-saml/pull/175) Introduce thread safety to SAML schema validation
 * [#171](https://github.com/onelogin/ruby-saml/pull/171) Fix inconsistent results with using regex matches in decode_raw_saml
+* 
 
 ### 0.9.1 (Feb 10, 2015)
 * [#194](https://github.com/onelogin/ruby-saml/pull/194) Relax nokogiri gem requirements