release 1.9.0

Author: alek13

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Change Log
 
+## [1.9.0](https://github.com/alek13/slack/compare/1.8.1...1.9.0)
+ - Added optional footer attachments. Closes maknz/slack#87, closes #2 George* 6/15/16 12:08 AM
+ - Php doc-blocks fixes. (Mesut Vatansever* 10/20/16 12:06 PM, Michal Vyšinský* 10/19/16 10:58 AM, Freek Van der Herten* 7/18/16 10:51 PM)
+
 ## [1.8.1](https://github.com/alek13/slack/compare/1.8.0...1.8.1)
 
  - Fix bug where message wouldn't get returned on send, closes maknz/slack#47 maknz* 6/26/16 8:06 AM