[2.3.3] Release readiness

- Updated README with date
- Updated CHANGELOG with date
- Upped VERSION constant

Author: weierophinney

CHANGELOG.md

@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## 2.3.3 (YYYY-MM-DD)
+## 2.3.3 (2014-09-17)
 
 - [6576: Custom barcode adapter wasn't being set in options](https://github.com/zendframework/zf2/pull/6576)
 - [6664: Use is_file to check for an uploaded file](https://github.com/zendframework/zf2/pull/6664)

README.md

@@ -9,11 +9,11 @@ Develop:
 
 ## RELEASE INFORMATION
 
-*Zend Framework 2.3.3dev*
+*Zend Framework 2.3.3*
 
 This is the third maintenance release for the version 2.3 series.
 
-DD MMM YYYY
+17 Sep 2014
 
 ### UPDATES IN 2.3.3
 

library/Zend/Version/Version.php

@@ -20,7 +20,7 @@ final class Version
     /**
      * Zend Framework version identification - see compareVersion()
      */
-    const VERSION = '2.3.3dev';
+    const VERSION = '2.3.3';
 
     /**
      * Github Service Identifier for version information is retrieved from