* doc/syntax/methods.rdoc: [DOC] Added example for underscore
  conventions in method names. Also added doc to clarify encoding
  character set support for Ruby programs and elaborated on defining
  predicate and bang methods. Based on a patch by @gaurish
  [Fixes GH-477] https://github.com/ruby/ruby/pull/477


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44350 b2dd03c8-39d4-4d8f-98ff-823fe69b080e