Merge pull request #1256 from rogeriopradoj/patch-1

Update Release Date for version 2.1.1 at user_guide_src/source/changelog.rst
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 8146a51..5f6d591 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -210,7 +210,7 @@
 Version 2.1.1
 =============
 
-Release Date: November 14, 2011
+Release Date: Not Released
 
 -  General Changes
    -  Fixed support for docx, xlsx files in mimes.php.