docs(changelog): Update CHANGELOG.md to new format

Author: toupeira

CHANGELOG.md

@@ -1,14 +1,10 @@
-# OmniAuth SAML Version History
-
-A generic SAML strategy for OmniAuth.
-
-https://github.com/omniauth/omniauth-saml
-
-## 1.6.0 (2016-06-27)
+<a name="v1.6.0"></a>
+### v1.6.0 (2016-06-27)
 * Ensure that subclasses of `OmniAuth::Stategies::SAML` are registered with OmniAuth as strategies (https://github.com/omniauth/omniauth-saml/pull/95)
 * Update ruby-saml to 1.3 to address [CVE-2016-5697](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5697) (Signature wrapping attacks)
 
-## 1.5.0 (2016-02-25)
+<a name="v1.5.0"></a>
+### v1.5.0 (2016-02-25)
 
 * Initialize OneLogin::RubySaml::Response instance with settings
 * Adding "settings" to Response Class at initialization to handle signing verification
@@ -18,56 +14,67 @@ https://github.com/omniauth/omniauth-saml
 * Call validation earlier to get real error instead of 'response missing name_id'
 * Avoid mutation of the options hash during requests and callbacks
 
-## 1.4.2 (2016-02-09)
+<a name="v1.4.2"></a>
+### v1.4.2 (2016-02-09)
 
 * update ruby-saml to 1.1
 
-## 1.4.1 (2015-08-09)
+<a name="v1.4.1"></a>
+### v1.4.1 (2015-08-09)
 
 * Configurable attribute_consuming_service
 
-## 1.4.0 (2015-07-23)
+<a name="v1.4.0"></a>
+### v1.4.0 (2015-07-23)
 
 * update ruby-saml to 1.0.0
 
-## 1.3.1 (2015-02-26)
+<a name="v1.3.1"></a>
+### v1.3.1 (2015-02-26)
 
 * Added missing fingerprint key check
 * Expose fingerprint on the auth_hash
 
-## 1.3.0 (2015-01-23)
+<a name="v1.3.0"></a>
+### v1.3.0 (2015-01-23)
 
 * add `idp_cert_fingerprint_validator` option
 
-## 1.2.0 (2014-03-19)
+<a name="v1.2.0"></a>
+### v1.2.0 (2014-03-19)
 
 * provide SP metadata at `/auth/saml/metadata`
 
-## 1.1.0 (2013-11-07)
+<a name="v1.1.0"></a>
+### v1.1.0 (2013-11-07)
 
 * no longer set a default `name_identifier_format`
 * pass strategy options to the underlying ruby-saml library
 * fallback to omniauth callback url if `assertion_consumer_service_url` is not set
 * add `idp_sso_target_url_runtime_params` option
 
-## 1.0.0 (2012-11-12)
+<a name="v1.0.0"></a>
+### v1.0.0 (2012-11-12)
 
 * remove SAML code and port to ruby-saml gem
 * fix incompatibility with OmniAuth 1.1
 
-## 0.9.2 (2012-03-30)
+<a name="v0.9.2"></a>
+### v0.9.2 (2012-03-30)
 
 * validate the SAML response
 * 100% test coverage
 * now requires ruby 1.9.2+
 
-## 0.9.1 (2012-02-23)
+<a name="v0.9.1"></a>
+### v0.9.1 (2012-02-23)
 
 * return first and last name in the info hash
 * no longer use LDAP OIDs for name and email selection
 * return SAML attributes as the omniauth raw_info hash
 
-## 0.9.0 (2012-02-14)
+<a name="v0.9.0"></a>
+### v0.9.0 (2012-02-14)
 
 * initial release
 * extracts commits from omniauth 0-3-stable branch