Update changelog

Author: AydinHassan

CHANGELOG.md

@@ -11,6 +11,15 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 
 ### Removed
 
+## [1.1.0]
+### Fixed
+ - Removed samsonasik/package-versions  - doesn't work well when globally installed - refs: https://github.com/Ocramius/PackageVersions/issues/38
+   using manual version numbers for now. Hopefully can be bought back in when fixed.
+ 
+### Added
+ - Improved error reporting when installing extensions - gives hints when PHP extensions are missing (#19)
+ - Required PHP extensions to composer.json (#19)
+
 ## [1.0.1]
 ### Fixed
  - Do not require a dev version of symfony/console (#22)