Added 2.6.4 release announcement

_posts/2016-04-26-2.6.4-released.md

@@ -0,0 +1,42 @@
+---
+title: 2.6.4 Released
+layout: post
+author: Samuel Giddins
+author_email: [email protected]
+---
+
+RubyGems 2.6.4 includes minor enhancements and bug fixes.
+
+To update to the latest RubyGems you can run:
+
+    gem update --system
+
+If you need to upgrade or downgrade please follow the [how to upgrade/downgrade
+RubyGems][upgrading] instructions.  To install RubyGems by hand see the
+[Download RubyGems][download] page.
+
+_Minor enhancements:_
+
+* Use Gem::Util::NULL_DEVICE instead of hard coded strings. Pull request #1588 by Chris Charabaruk.
+* Use File.symlink on MS Windows if supported. Pull request #1418 by Nobuyoshi Nakada.
+
+_Bug fixes:_
+
+* Redact uri password from error output when gem fetch fails. Pull request #1565 by Brian Fletcher.
+* Suppress warnings. Pull request #1594 by Nobuyoshi Nakada.
+* Escape user-supplied content served on web pages by `gem server` to avoid potential XSS vulnerabilities. Samuel Giddins.
+
+
+SHA256 Checksums:
+
+* rubygems-2.6.4.tgz  
+  94d71f42462e12b31054e8c939374f8314f024b1ae5ec1c68ecfc6290da260e8
+* rubygems-2.6.4.zip  
+  e17cdc670df66555af1fa8f508b1b5b25192cf4c9ab212de96fb19491d2523b2
+* rubygems-update-2.6.4.gem  
+  2b3e548dbda80728b8c5b2500a210cd13d5f8deb707e295f0224b48bed111e13
+
+
+[download]: http://rubygems.org/pages/download
+[upgrading]: http://docs.seattlerb.org/rubygems/UPGRADING_rdoc.html
+