Update CHANGES.md

CHANGES.md

+### Version 0.3.4
+
+https://github.com/Netflix/ribbon/pull/62
+* Fix Issue #61: FollowRedirects impossible to turn off.
+
+### Version 0.3.3
+
+https://github.com/Netflix/ribbon/pull/60
+* add hook for custom ssl factory and AcceptAllSocketFactory implementation
+
+### Version 0.3.2
+
+[pull request 57](https://github.com/Netflix/ribbon/pull/57)
+* Make sure NamedConnectionPool instances register with Servo with unique names.
+
 ### Version 0.3.1
 
 [pull request 56](https://github.com/Netflix/ribbon/pull/56)