Update CHANGELOG.md

Author: spiritix

CHANGELOG.md

@@ -7,11 +7,15 @@
 
 ### Fixed
 
+## [2.0.1] - 2016-05-19
+### Fixed
+- Fixed a critical bug
+
 ## [2.0] - 2016-05-18
 ### Added
 - Started everything from scratch
 - Code is now PSR compliant, fully unit tested and state-of-the-art
 
 ## [1.0] - 2015-04-28
 ### Added
-- Initial stable release
+- Initial stable release