[ANN] rdoc 3.4 Released

[Eric Hodel]

rdoc version 3.4 has been released!

* RDoc Project Page: https://github.com/rdoc/rdoc/
* RDoc Documentation: http://rdoc.rubyforge.org/
* RDoc Bug Tracker: https://github.com/rdoc/rdoc/issues

RDoc produces HTML and command-line documentation for Ruby projects. RDoc
includes the +rdoc+ and +ri+ tools for generating and displaying online
documentation.

See RDoc for a description of RDoc's markup and basic use.

Changes:

### 3.4

* Minor enhancements
* RDoc::RDoc#document may now be called with an RDoc::Options instance.
* Bug fixes
* Added skips to Encoding tests running on 1.8.
* Fixed warnings