Make --quiet --no-ignore-invalid still exit for invalid options

--quiet should reduce verbosity, it should not change the
underlying behavior.
Removed rdoc_tags hoe plugin
Fix outdated RDoc::Markup::ToHtml.new usage example
RDoc::Options should rescue from OptionParser::ParseError

This improves parsing needless and missing arguments from optparse.rb
update History.rdoc change log from 437dc75
Merge branch 'jeremyevans-master'

* jeremyevans-master:
  update History.rdoc change log from 437dc75
  RDoc::Options should rescue from OptionParser::ParseError
  Fix outdated RDoc::Markup::ToHtml.new usage example
  Removed rdoc_tags hoe plugin
  Make --quiet --no-ignore-invalid still exit for invalid options

Conflicts:
	test/test_rdoc_options.rb
Update History for #192