Add translate until list comprehensions

I'm translating haskell guide from Adit Bhargava (learnxinyminutes contribuitor) but adding a few more stuff about haskell
Add traslate the topic more functions

Extra-Add a topic about the refs and 'keep readings'
Add translate until Haskell::IO

Plus some extra references
Change header contribuitor id to english labels
Add a complete translation on haskell guide

I have translated to brazilian portuguese your Haskell quick guide written by Adit Bhargava plus i have add some new ideas.
Add the contribuior and translator id's header

Just adding a better explained header
Ruby: Adds attr_accessor, attr_reader, and attr_writer to class docs
Merge pull request #420 from tonussi/master

[haskell/pt-br] PR: Learn Haskell Quick Guide Translated to PT-BR
Merge pull request #428 from davefp/ruby_attr_accessor

[ruby/en] Adds attr_accessor, attr_reader, and attr_writer to class docs
Merge pull request #429 from sshine/master

[standard-ml/en-en] Mainly, adding this language as it doesn't exist.
Merge pull request #430 from sshine/master

[standard-ml/en-en] Removing syntax errors and fixing solve2 function
typos
Fixed typo
Merge pull request #431 from nelsonr/patch-1

Fixed typo
[standard-ml/en-en] Update to list part
[standard-ml/en-en] Add missing comma
[standard-ml/en-en] Add myself as a collaborator
[standard-ml/en-en] Update list doc again
[standard-ml/en-en] Small whitespace fix
[standard-ml/en-en] Exceptions