[Bro] Bro v2.4 release

[Johanna Amann]

Hello,

Bro v2.4 just has been released. For more information, see the blog post
at http://blog.bro.org/2015/06/bro-24-released.html as well as the release
notes at https://www.bro.org/download/NEWS.bro.html

Bro is available for download at https://www.bro.org/download/

Thanks to everyone who helped make this release possible.  We extend
special thanks to the community for their feedback and support.

The Bro Team